Muscle Actions Of Hip, Thigh, And Leg
Understand and study muscle actions of the hip, thigh, and leg.
- 1.
What muscle extends and laterally rotates thigh and braces the knee?
- A.
Gluteus Medius
- B.
Gluteus Maximus
- C.
Piriformus
- D.
Iliopsoas
Correct Answer
B. Gluteus MaximusExplanation
The gluteus maximus is the correct answer because it is the muscle that extends and laterally rotates the thigh and also helps to brace the knee. It is the largest muscle in the buttocks and is responsible for movements such as standing up from a sitting position, climbing stairs, and running.Rate this question:
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- 2.
What muscle flexes the thigh?
- A.
Gluteus Minimus
- B.
Satorius
- C.
Tensor fasciae latae
- D.
Gracilis
Correct Answer
C. Tensor fasciae lataeExplanation
The correct answer is Tensor fasciae latae. The tensor fasciae latae is a muscle located on the outside of the hip. It plays a role in flexing and abducting the thigh, as well as stabilizing the hip joint. This muscle works in conjunction with other muscles to allow movements such as walking, running, and climbing stairs.Rate this question:
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- 3.
Check the 2 muscles that abducts and medial rotates the thigh.
- A.
Gluteus Medius
- B.
Gluteus Maximus
- C.
Gluteus Minimus
- D.
Piriformus
Correct Answer(s)
A. Gluteus Medius
C. Gluteus MinimusExplanation
The gluteus medius and gluteus minimus muscles are responsible for both abduction and medial rotation of the thigh. These muscles work together to move the thigh away from the midline of the body (abduction) and rotate it inward towards the midline (medial rotation). The gluteus maximus, on the other hand, is primarily responsible for extending the thigh. The piriformis muscle is also involved in hip rotation, but it primarily performs external rotation of the thigh, not medial rotation.Rate this question:
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- 4.
Check the 5 muscles that laterally rotate the thigh.
- A.
Piriformus
- B.
Obturator internus
- C.
Rectus Femoris
- D.
Superior gemellus
- E.
Inferior gemellus
- F.
Semimembranosus
- G.
Obturator externus
Correct Answer(s)
A. Piriformus
B. Obturator internus
D. Superior gemellus
E. Inferior gemellus
G. Obturator externusExplanation
The correct answer includes the muscles that are responsible for laterally rotating the thigh. These muscles are the Piriformis, Obturator internus, Superior gemellus, Inferior gemellus, and Obturator externus. The Rectus Femoris and Semimembranosus are not included in the correct answer because they do not perform the action of lateral rotation of the thigh.Rate this question:
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- 5.
What muscle is a lateral rotator and adductor of thigh?
- A.
Tensor fasciae latae
- B.
Vastus Laterialis
- C.
Vastus Medialis
- D.
Quadratus femoris
Correct Answer
D. Quadratus femorisExplanation
The quadratus femoris muscle is a lateral rotator and adductor of the thigh. It helps to rotate the thigh laterally and also assists in adducting the thigh towards the midline of the body. The other options, tensor fasciae latae, vastus lateralis, and vastus medialis, do not have these specific functions.Rate this question:
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- 6.
What is the action of iliopsoas muscle?
- A.
Adducts thigh
- B.
Abducts thigh
- C.
Flexes thigh
- D.
Extend thigh
Correct Answer
C. Flexes thighExplanation
The action of the iliopsoas muscle is to flex the thigh. This muscle is located in the hip region and is responsible for bringing the thigh towards the abdomen. Flexion of the thigh occurs when the angle between the thigh and the torso decreases, such as when lifting the leg during walking or climbing stairs. Therefore, the correct answer is "Flexes thigh."Rate this question:
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- 7.
What muscle flexes thight at hip; rotates thigh laterally; and flexes the knee?
- A.
Sartorius
- B.
Gracilis
- C.
Pectineus
- D.
Adductor Magnus
Correct Answer
A. SartoriusExplanation
The Sartorius muscle is responsible for flexing the thigh at the hip, rotating the thigh laterally, and flexing the knee. It is the longest muscle in the body and runs diagonally across the front of the thigh. Its unique positioning allows it to perform these multiple actions simultaneously, making it an important muscle for various movements such as crossing the legs or performing a high kick.Rate this question:
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- 8.
What muscle flexes thigh and extends knee?
- A.
Vastus Intermedius
- B.
Rectus Femoris
- C.
Biceps Femoris long head
- D.
Biceps Femoris short head
Correct Answer
B. Rectus FemorisExplanation
The rectus femoris muscle is responsible for flexing the thigh and extending the knee. It is one of the four muscles that make up the quadriceps muscle group. Located in the front of the thigh, the rectus femoris crosses both the hip and knee joints, allowing it to perform these actions. This muscle is particularly important in activities such as walking, running, and jumping.Rate this question:
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- 9.
Vastus lateralis, intermedius, and medialis perform what action?
- A.
Flex knee
- B.
Extend knee
- C.
Flex hip
- D.
Extend hip
Correct Answer
B. Extend kneeExplanation
The vastus lateralis, intermedius, and medialis are muscles located in the thigh. These muscles work together to extend the knee joint, allowing the leg to straighten. When these muscles contract, they pull on the patellar tendon, which in turn pulls the lower leg bones, extending the knee. This action is important for activities such as walking, running, and jumping.Rate this question:
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- 10.
What muscle flexes and adducts thigh at hip?
- A.
Sartorius
- B.
Adductor Magnus
- C.
Pectineus
- D.
Gracilis
Correct Answer
C. PectineusExplanation
The muscle that flexes and adducts the thigh at the hip is the Pectineus. It is a short muscle located in the upper inner thigh. It works in conjunction with other muscles to bring the thigh towards the midline of the body and to flex the hip joint.Rate this question:
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- 11.
What muscle adducts thigh and flexes knee?
- A.
Gracilis
- B.
Adductor longus
- C.
Adductor brevis
- D.
Adductor magnus
Correct Answer
A. GracilisExplanation
The Gracilis muscle is responsible for adducting the thigh and flexing the knee. This means that it pulls the thigh towards the midline of the body and also helps in bending the knee joint. The other options, Adductor longus, Adductor brevis, and Adductor magnus, are also adductor muscles but do not specifically flex the knee.Rate this question:
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- 12.
Check the 2 muscles that adducts and flexes thigh at hip joint.
- A.
Adductor magnus
- B.
Adductor longus
- C.
Adductor brevis
- D.
Pectineus
Correct Answer(s)
B. Adductor longus
C. Adductor brevisExplanation
The adductor longus and adductor brevis muscles are responsible for both adducting and flexing the thigh at the hip joint. These muscles work together to bring the thigh towards the midline of the body (adduction) and also assist in bending the thigh towards the torso (flexion). The adductor magnus muscle primarily performs adduction but has limited involvement in hip flexion. The pectineus muscle is also involved in hip flexion but has minimal contribution to hip adduction.Rate this question:
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- 13.
What muscle adducts, extends, flexes, and rotates thigh at hip joint?
- A.
Biceps Femoris long head
- B.
Biceps Femoris short head
- C.
Adductor magnus
- D.
Adductor longus
Correct Answer
C. Adductor magnusExplanation
The adductor magnus muscle is responsible for adducting, extending, flexing, and rotating the thigh at the hip joint. It is a large muscle located in the inner thigh and plays a significant role in movements such as bringing the legs together, extending the leg backward, flexing the leg forward, and rotating the thigh internally and externally.Rate this question:
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- 14.
Check the 3 muscles that extends hip and flexes knee.
- A.
Biceps Femoris long head
- B.
Biceps Femoris short head
- C.
Semimembranosus
- D.
Semitendinosus
- E.
Adductor Magnus
Correct Answer(s)
A. Biceps Femoris long head
C. Semimembranosus
D. SemitendinosusExplanation
The correct answer includes the muscles Biceps Femoris long head, Semimembranosus, and Semitendinosus. These muscles are responsible for both extending the hip and flexing the knee. The Biceps Femoris long head is one of the hamstring muscles located on the back of the thigh, while the Semimembranosus and Semitendinosus are also part of the hamstring group. These muscles play a crucial role in movements such as walking, running, and jumping.Rate this question:
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- 15.
What action does Biceps Femoris short head muscle perform?
- A.
Extend knee
- B.
Flex knee
- C.
Plantarflexion
- D.
Dorsiflexion
Correct Answer
B. Flex kneeExplanation
The Biceps Femoris short head muscle performs the action of flexing the knee. This means that it is responsible for bending the knee joint, bringing the lower leg closer to the upper leg.Rate this question:
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- 16.
What muscle flexes knee and plantar flexes foot?
- A.
Gastrocnemius
- B.
Soleus
- C.
Plantaris
- D.
Popliteus
Correct Answer
A. GastrocnemiusExplanation
The correct answer is Gastrocnemius. The Gastrocnemius muscle is located in the calf and is responsible for flexing the knee and plantar flexing the foot. It is a large muscle that helps in activities such as walking, running, and jumping. The Soleus muscle also assists in plantar flexion, but it is not involved in knee flexion. Plantaris muscle is a small muscle that aids in plantar flexion and knee flexion to a lesser extent. Popliteus muscle is located behind the knee and mainly functions to unlock the knee joint.Rate this question:
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- 17.
What action does the soleus muscle perform?
- A.
Flex knee
- B.
Extend knee
- C.
Dorsiflexion
- D.
Plantarflexion
Correct Answer
D. PlantarflexionExplanation
The soleus muscle performs plantarflexion, which is the movement of pointing the foot downwards or extending the ankle joint. This action is essential for activities like walking, running, and jumping as it helps in pushing off the ground and propelling the body forward. The soleus muscle works in conjunction with the gastrocnemius muscle to perform plantarflexion.Rate this question:
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- 18.
What muscle flexes knee and weakly plantar flexes foot?
- A.
Soleus
- B.
Plantaris
- C.
Popliteus
- D.
Flexor Digitorum Longus
Correct Answer
B. PlantarisExplanation
The plantaris muscle is responsible for flexing the knee and weakly plantar flexing the foot. It is a small muscle located in the posterior compartment of the leg. While it primarily assists in knee flexion, it also contributes to the movement of plantar flexion, although its role in this movement is relatively weak compared to other muscles such as the gastrocnemius and soleus.Rate this question:
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- 19.
What muscle flexes knee and rotates leg medially?
- A.
Popliteus
- B.
Soleus
- C.
Tibialis anterior
- D.
Tibialis posterior
Correct Answer
A. PopliteusExplanation
The popliteus muscle is responsible for flexing the knee and rotating the leg medially. It is located at the back of the knee joint and plays a crucial role in unlocking the knee joint by internally rotating the tibia. This muscle helps in initiating knee flexion and also provides stability to the knee during movements such as walking and running.Rate this question:
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- 20.
What muscle flexes hallux; plantar flexes and inverts foot?
- A.
Extensor Hallucis Longus
- B.
Flexor Hallucis Longus
- C.
Flexor Digitorum Longus
- D.
Tibialis posterior
Correct Answer
B. Flexor Hallucis LongusExplanation
The correct answer is Flexor Hallucis Longus. This muscle is responsible for flexing the hallux (big toe) and also for plantar flexion and inversion of the foot.Rate this question:
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- 21.
What muscle flexes DIP; plantar flexes and inverts foot?
- A.
Extensor Digitorum Longus
- B.
Peroneus Longus
- C.
Flexor Digitorum Longus
- D.
Peroneus Brevis
Correct Answer
C. Flexor Digitorum LongusExplanation
The muscle that flexes the DIP (distal interphalangeal) joint, plantar flexes, and inverts the foot is the Flexor Digitorum Longus. This muscle is located in the lower leg and is responsible for flexing the toes and assisting in the movement of the foot. It plays a crucial role in activities such as walking, running, and maintaining balance.Rate this question:
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- 22.
What muscle plantar flexes and inverts foot?
- A.
Tibialis anterior
- B.
Tibialis posterior
Correct Answer
B. Tibialis posteriorExplanation
The muscle that plantar flexes and inverts the foot is the Tibialis posterior. This muscle is located in the posterior compartment of the leg and plays a key role in stabilizing the foot and ankle during movement. When the Tibialis posterior contracts, it helps to point the toes downward (plantar flexion) and turn the sole of the foot inward (inversion). This movement is important for activities such as walking, running, and maintaining balance.Rate this question:
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- 23.
What muscle dorsiflexes and inverts foot?
- A.
Tibialis anterior
- B.
Tibialis posterior
Correct Answer
A. Tibialis anteriorExplanation
The tibialis anterior muscle is responsible for dorsiflexion and inversion of the foot. Dorsiflexion refers to the movement of the foot towards the shin, while inversion refers to the movement of the foot towards the midline of the body. The tibialis anterior muscle is located on the front of the lower leg and plays a crucial role in controlling the movement and stability of the foot.Rate this question:
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- 24.
What muscle extends hallux; dorsiflexes and inverts foot?
- A.
Extensor Hallucis Longus
- B.
Extensor Digitorum Longus
- C.
Peroneus Longus
- D.
Peroneus Brevis
Correct Answer
A. Extensor Hallucis LongusExplanation
The Extensor Hallucis Longus muscle is responsible for extending the hallux (big toe), dorsiflexing the foot (lifting the foot upwards), and inverting the foot (turning the sole of the foot inward).Rate this question:
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- 25.
Extensor Digitorum Longus extends toes; dorsiflexes and what the foot?
- A.
Invert
- B.
Evert
Correct Answer
B. EvertExplanation
The Extensor Digitorum Longus muscle is responsible for extending the toes and dorsiflexing the foot. Dorsiflexion refers to the movement of bringing the top of the foot towards the shin. Since the question asks for what the foot does, "Evert" is the correct answer. Eversion refers to the movement of turning the sole of the foot outward.Rate this question:
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- 26.
What muscle dorsiflexes and everts the foot?
- A.
Plantaris
- B.
Soleus
- C.
Peroneus Longus
- D.
Peroneus Tertius
Correct Answer
D. Peroneus TertiusExplanation
The Peroneus Tertius muscle is responsible for dorsiflexion and eversion of the foot. Dorsiflexion refers to the movement of bringing the top of the foot towards the shin, while eversion refers to the movement of turning the foot outward. The Peroneus Tertius muscle is located on the outer side of the lower leg and helps in these movements, providing stability and control during walking and running.Rate this question:
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- 27.
Check the 2 muscles that everts foot and plantar flexes.
- A.
Peroneus Tertius
- B.
Peroneus Longus
- C.
Peroneus Brevis
Correct Answer(s)
B. Peroneus Longus
C. Peroneus BrevisExplanation
The correct answer is Peroneus Longus and Peroneus Brevis. These two muscles are responsible for eversion of the foot, which means they turn the sole of the foot outward. Additionally, they also contribute to plantar flexion, which is the movement of pointing the toes downward.Rate this question:
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- 28.
Check the prime mover or movers for the hip flexors.
- A.
Iliopsoas
- B.
Rectus Fermoris
- C.
Tensor Fascia latae
- D.
Sartorius
- E.
Pectineus
Correct Answer(s)
A. Iliopsoas
B. Rectus FermorisExplanation
The correct answer is Iliopsoas and Rectus Fermoris. The prime movers for the hip flexors are the muscles that are primarily responsible for initiating and performing the movement of hip flexion. The iliopsoas muscle is a combination of the iliacus and psoas major muscles and is a powerful hip flexor. The rectus femoris is one of the four quadriceps muscles and is also a strong hip flexor. These muscles work together to flex the hip joint and bring the thigh towards the torso.Rate this question:
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- 29.
Check the prime mover or movers of hip extensors.
- A.
Semimembranosus
- B.
Semitendinosus
- C.
Gluteus Maximus
- D.
Biceps Femoris long head
Correct Answer
C. Gluteus MaximusExplanation
The gluteus maximus is a prime mover of hip extension. It is the largest and most powerful muscle in the gluteal region and is responsible for extending the hip joint, which means it helps to move the thigh backward. This muscle is important for activities such as walking, running, and climbing stairs.Rate this question:
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- 30.
Check the prime mover or movers of hip adductors.
- A.
Adductor magnus
- B.
Adductor Longus
- C.
Adductor brevis
- D.
Gracilis
- E.
Pectineus
Correct Answer(s)
A. Adductor magnus
B. Adductor LongusExplanation
The correct answer is Adductor magnus and Adductor Longus. These muscles are responsible for hip adduction, which is the movement of bringing the leg towards the midline of the body. The Adductor magnus is the largest of the hip adductors and is located on the inner thigh. The Adductor Longus is a smaller muscle located next to the Adductor magnus. Together, these muscles work to bring the leg in towards the body's midline.Rate this question:
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- 31.
Check the prime mover or movers of hip external rotators.
- A.
Obturator internus
- B.
Obturator externus
- C.
Gluteus maximus
- D.
Piriformis
- E.
Superior gemellus
- F.
Inferior gemellus
- G.
Quadratus fermoris
Correct Answer(s)
C. Gluteus maximus
D. PiriformisExplanation
The gluteus maximus and piriformis are both prime movers of hip external rotation. The gluteus maximus is the largest muscle in the buttocks and is responsible for extending and externally rotating the hip. The piriformis is a smaller muscle located deep in the buttocks and is also involved in hip external rotation. Both muscles play an important role in stabilizing and controlling the movement of the hip joint during external rotation.Rate this question:
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- 32.
Check the muscle that does not belong to the knee flexors.
- A.
Semitendinosus
- B.
Semimembranosus
- C.
Pectineus
- D.
Biceps femoris
- E.
Popliteus
- F.
Gastrocnemius
Correct Answer
C. PectineusExplanation
The muscle that does not belong to the knee flexors is the Pectineus. The other muscles listed, such as the Semitendinosus, Semimembranosus, Biceps femoris, Popliteus, and Gastrocnemius, are all involved in the flexion of the knee joint. However, the Pectineus is not primarily responsible for knee flexion but rather for hip flexion and adduction.Rate this question:
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- 33.
Check the muscle that does not belong to knee extensors.
- A.
Rectus femoris
- B.
Biceps femoris
- C.
Vastus lateralis
- D.
Vastus intermedius
- E.
Vastus medialis
Correct Answer
B. Biceps femorisExplanation
The biceps femoris is a muscle that does not belong to the knee extensors. It is actually a muscle of the posterior thigh and is responsible for flexing the knee and extending the hip. The knee extensors, on the other hand, are a group of muscles that work together to extend the knee joint. These muscles include the rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis. Therefore, the biceps femoris is the correct answer as it is not part of the knee extensor group.Rate this question:
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- 34.
Check the 2 prime mover muscles for plantarflexion.
- A.
Gastrocnemius
- B.
Extensor Digitorum Longus
- C.
Soleus
- D.
Tibialis anterior
Correct Answer(s)
A. Gastrocnemius
C. SoleusExplanation
The correct answer is Gastrocnemius and Soleus. These two muscles are responsible for plantarflexion, which is the movement of pointing the foot downwards. The Gastrocnemius is a large muscle located in the calf, while the Soleus is a smaller muscle located beneath the Gastrocnemius. Both of these muscles work together to generate the force needed for plantarflexion.Rate this question:
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- 35.
Check the 2 prime mover muscles for dorsiflexion.
- A.
Tibialis posterior
- B.
Tibialis anterior
- C.
Extensor digitorum longus
Correct Answer(s)
B. Tibialis anterior
C. Extensor digitorum longusExplanation
The correct answer is Tibialis anterior and Extensor digitorum longus because these two muscles are responsible for dorsiflexion, which is the movement that brings the foot upward towards the shin. The Tibialis anterior muscle is located on the front of the leg and helps to lift the foot and control its movement during walking. The Extensor digitorum longus muscle is also located on the front of the leg and extends the toes, assisting in dorsiflexion. Both of these muscles work together to allow for dorsiflexion of the foot.Rate this question:
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- 36.
Check the prime mover muscles for inversion.
- A.
Tibialis anterior
- B.
Tibialis posterior
- C.
Peroneus Longus
Correct Answer(s)
A. Tibialis anterior
B. Tibialis posteriorExplanation
The prime mover muscles for inversion are the Tibialis anterior and Tibialis posterior. These muscles are responsible for moving the foot inward, or towards the midline of the body. The Tibialis anterior is located on the front of the lower leg and is responsible for dorsiflexion and inversion of the foot. The Tibialis posterior is located on the back of the lower leg and is responsible for plantarflexion and inversion of the foot. These muscles work together to control the movement of the foot during inversion.Rate this question:
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- 37.
Check the prime mover muscles for eversion.
- A.
Peroneus longus
- B.
Extensor Digitorum longus
- C.
Peroneus brevis
Correct Answer(s)
A. Peroneus longus
C. Peroneus brevisExplanation
The prime mover muscles for eversion are responsible for moving the foot outward. The peroneus longus and peroneus brevis muscles are both prime movers for eversion. They work together to contract and pull the foot away from the midline of the body. The extensor digitorum longus muscle, on the other hand, is not involved in eversion. It is responsible for extending the toes.Rate this question:
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- 38.
Lumbricals and flexor Hallucis brevis are the prime movers for what?
- A.
Plantarflexion
- B.
Dorsiflexion
- C.
Metatarsophalangeal flexion
- D.
Interphalangeal flexion
Correct Answer
C. MetatarsopHalangeal flexionExplanation
The lumbricals and flexor hallucis brevis muscles are responsible for metatarsophalangeal flexion. Metatarsophalangeal joints are the joints between the metatarsal bones of the foot and the phalanges of the toes. Flexion at these joints allows for the bending of the toes towards the sole of the foot. The lumbricals and flexor hallucis brevis muscles play a key role in this movement by contracting and pulling the toes downwards, contributing to metatarsophalangeal flexion.Rate this question:
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- 39.
Flexor Digitorum longus and brevis, and Flaxor Hallucis longus are the prime movers for what?
- A.
Interphalangeal flexion
- B.
Plantar flexion
- C.
Dorsiflexion
- D.
Knee flexion
Correct Answer
A. InterpHalangeal flexionExplanation
The prime movers for interphalangeal flexion are the flexor digitorum longus and brevis, and flexor hallucis longus. These muscles are responsible for flexing the joints of the fingers and toes, allowing them to bend towards the palm or sole of the foot. Plantar flexion refers to the movement of pointing the foot downwards, dorsiflexion refers to the movement of pulling the foot upwards, and knee flexion refers to the bending of the knee joint.Rate this question:
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- 40.
Check the 3 muscles that are the extensors of Metatarsophalangeal and Interphalangeal joint of hallux.
- A.
Extensor Digitorum longus
- B.
Extensor Digitorum brevis
- C.
Extensor Hallucis brevis
- D.
Extensor Hallucis longus
Correct Answer(s)
A. Extensor Digitorum longus
B. Extensor Digitorum brevis
D. Extensor Hallucis longusExplanation
The correct answer is Extensor Digitorum longus, Extensor Digitorum brevis, and Extensor Hallucis longus. These three muscles are responsible for extending the Metatarsophalangeal and Interphalangeal joints of the hallux, which is the big toe. The Extensor Digitorum longus extends the toes, while the Extensor Digitorum brevis extends the smaller toes. The Extensor Hallucis longus specifically extends the big toe. These muscles work together to provide movement and stability to the joints of the hallux.Rate this question:
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