1.
Identify the muscle labeled "E"
Correct Answer
C. Rectus Femoris
Explanation
The muscle labeled "E" is the Rectus Femoris.
2.
To what group of muscles does "E" belong?
Correct Answer
B. Quadriceps Femoris
Explanation
The correct answer is Quadriceps Femoris because "E" belongs to the group of muscles known as the quadriceps femoris. The quadriceps femoris is a group of four muscles located in the front of the thigh, namely the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius. These muscles work together to extend the leg and are responsible for movements such as walking, running, and jumping.
3.
Identify the muscle labeled "F"
Correct Answer
C. Vastus Lateralis
Explanation
The correct answer is Vastus Lateralis. This muscle is located on the outer side of the thigh and is one of the four quadriceps muscles. It helps in extending the leg at the knee joint and is important for activities such as walking, running, and jumping.
4.
Identify the muscle labeled "C"
Correct Answer
B. Extensor digitorum longus
Explanation
The correct answer is Extensor digitorum longus. This muscle is located in the anterior compartment of the leg and is responsible for extending the toes. It originates from the lateral condyle of the tibia and the fibula, and inserts into the middle and distal phalanges of the lateral four toes. It is involved in dorsiflexion of the foot and extension of the toes.
5.
Identify the muscle labeled "A"
Correct Answer
B. Rectus femoris
Explanation
The correct answer is Rectus femoris. The rectus femoris is a muscle located in the anterior compartment of the thigh. It is one of the four quadriceps muscles and is responsible for extending the leg at the knee joint. It originates from the pelvis and inserts into the patella and tibia. The rectus femoris is the only quadriceps muscle that crosses both the hip and knee joints, allowing it to also assist in flexion of the hip joint.
6.
Identify the muscle labeled "B"
Correct Answer
B. Sartorius
Explanation
The correct answer is Sartorius. The Sartorius muscle is a long, thin muscle that runs down the front of the thigh. It originates from the anterior superior iliac spine and inserts onto the medial surface of the tibia. It is the longest muscle in the body and is responsible for flexing, abducting, and laterally rotating the hip joint, as well as flexing the knee joint.
7.
Identify "C"
Correct Answer
C. Iliotibial tract
Explanation
The correct answer is the Iliotibial tract. The Iliotibial tract is a thick band of connective tissue that runs along the outside of the thigh. It starts at the hip and extends down to the knee. It plays a role in stabilizing the knee joint during movement and helps to prevent excessive lateral movement of the thigh. The Vastus lateralis is a muscle located on the front of the thigh and is one of the quadriceps muscles. The Gluteus maximus is the largest muscle in the buttocks and is responsible for hip extension.
8.
Where does the Tibialis Anterior insert?
Correct Answer
C. Medial plantar surfaces of medial cuneiform and base of metatarsal I
Explanation
The Tibialis Anterior muscle inserts into the medial plantar surfaces of the medial cuneiform and the base of metatarsal I.
9.
Where does the muscle labeled "A" originate and insert?
Correct Answer
C. Anterior superior iliac spine / superior part of medial surface of tibia
10.
Identify the muscle labeled "B"
Correct Answer
C. Gracilis
Explanation
The correct answer is gracilis. The gracilis muscle is located in the inner thigh and is responsible for adducting and flexing the hip joint. It is one of the muscles that helps to stabilize the pelvis during movements such as walking or running.
11.
Where does the muscle labeled "B" originate?
Correct Answer
C. Body of pubis and inferior pubic ramus
Explanation
Muscle B originates from the body of the pubis and the inferior pubic ramus.
12.
Where does the Fibularis Longus muscle insert?
Correct Answer
B. Plantar base of metatarsal I and medial cuneiform
Explanation
The Fibularis Longus muscle inserts at the plantar base of metatarsal I and the medial cuneiform.
13.
Identify the muscle labeled "D"
Correct Answer
C. Extensor digitorum longus
Explanation
The muscle labeled "D" is the extensor digitorum longus.
14.
What is the origin of the vastus medialis?
Correct Answer
B. Intertrochanteric line and medial lip of linea aspera of femur
Explanation
The vastus medialis originates from the intertrochanteric line and medial lip of the linea aspera of the femur. This means that it attaches to the inner part of the thigh bone, specifically the bony prominences on the upper part of the femur.
15.
What is the action of the rectus femoris?
Correct Answer
C. Extends leg at knee joint, flexes thigh at hip joint
Explanation
The rectus femoris is a muscle located in the front of the thigh. It is responsible for two main actions: extending the leg at the knee joint and flexing the thigh at the hip joint. This means that it helps in straightening the leg and in bringing the thigh towards the abdomen. The other options mentioned in the question, such as abducting, medially rotating, and stabilizing the hip, are not actions performed by the rectus femoris.