The Elbow Joint: Functions And Location! Quiz
(137).jpg "The Elbow Joint: Functions And Location! Quiz - Quiz")
How much do you know about the elbow joint, functions, and location? The elbow is a visible joint between the upper and lower parts of the arm. The elbow is a compound joint with a cartilage layer that permits it to move and function correctly. These include the proximal joint, the humeroradial joint, and the humeroulnar joint. This quiz will put the elbow in its place and allow you to learn interesting trivia with every question you attempt. You got this.
- 1.
Which muscle originates on the humeral medial epicondyle and proximal ulna and spans the elbow anteriorly to attach on the lateral surface of the radius near its midpoint?
- A.
Supinator
- B.
Anconeus
- C.
Pronator teres
- D.
Brachialis
Correct Answer
C. Pronator teresExplanation
The pronator teres muscle originates from the humeral medial epicondyle and proximal ulna. It spans the anterior aspect of the elbow and attaches to the lateral surface of the radius near its midpoint. This muscle facilitates forearm pronation, enabling movements like turning a screwdriver or opening a jar.Rate this question:
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- 2.
Which muscle originates on the lateral epicondyle of the humerus and inserts on the anterior surface of the proximal radius?
- A.
Anconeus
- B.
Pronator teres
- C.
Pronator quadratus
- D.
Supinator
Correct Answer
D. SupinatorExplanation
The muscle that originates on the lateral epicondyle of the humerus and inserts on the anterior surface of the proximal radius is the Supinator.Rate this question:
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- 3.
Which muscle originates on the humeral lateral condyle and inserts on the radial styloid process?
- A.
Brachioradialis
- B.
Flexor carpi radialis
- C.
Pronator teres
- D.
Pronator quadratus
Correct Answer
A. BrachioradialisExplanation
The muscle that originates on the humeral lateral condyle and inserts on the radial styloid process is the brachioradialis. This muscle is located in the forearm and is responsible for flexing the forearm at the elbow joint. It is innervated by the radial nerve and plays a role in stabilizing the wrist during certain movements.Rate this question:
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- 4.
Which muscles originate on the distal half of the humerus( anterior surface) and inserts on the coronoid process and the ulnar tuberosity of the ulna?
- A.
Coracobrachialis
- B.
Short head of biceps Brachii
- C.
Brachialis
- D.
Supinator
Correct Answer
C. BrachialisExplanation
The Brachialis muscle originates on the distal half of the humerus (anterior surface) and inserts on the coronoid process and the ulnar tuberosity of the ulna.Rate this question:
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- 5.
Which of the following groups are the prime movers in elbow flexion?
- A.
Biceps, supinator, and brachialis
- B.
Brachialis, brachioradialis, and anconeus
- C.
Biceps, Pronator teres, and supinator
- D.
Brachialis, Biceps, and Brachioradialis
Correct Answer
D. Brachialis, Biceps, and BrachioradialisExplanation
The prime movers in elbow flexion are the muscles responsible for initiating and carrying out the movement. In this case, the brachialis, biceps, and brachioradialis are the primary muscles involved in flexing the elbow joint. These muscles work together to contract and shorten, causing the forearm to move towards the upper arm. The biceps muscle is the most well-known and prominent muscle in this group, but the brachialis and brachioradialis also play important roles in elbow flexion.Rate this question:
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- 6.
The triceps are responsible for which of the following actions?
- A.
Elbow flexion and Forearm supination
- B.
Forearm supination
- C.
Elbow Extension
- D.
Elbow extension and wrist radial deviation
Correct Answer
C. Elbow ExtensionExplanation
The triceps are responsible for elbow extension, which is the action of straightening the arm at the elbow joint. When the triceps contract, they pull on the forearm bone (ulna), causing it to extend and the angle between the upper arm (humerus) and the forearm to increase. This movement is the opposite of elbow flexion, which is the action of bending the arm at the elbow joint. Therefore, the correct answer is "Elbow Extension".Rate this question:
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- 7.
The Muscle that would act on the forearm to neutralize forearm supination would be which of the following muscles?
- A.
Triceps and pronator teres
- B.
Pronator teres and Pronator Quadratus
- C.
Brachialis and Brachioradialis
- D.
Triceps and Anconeus
Correct Answer
B. Pronator teres and Pronator QuadratusExplanation
The muscles that would act on the forearm to neutralize forearm supination are the pronator teres and pronator quadratus. These muscles work together to rotate the forearm inward, counteracting the outward rotation of supination. The triceps and anconeus muscles are responsible for extending the forearm, while the brachialis and brachioradialis muscles are involved in flexion of the forearm. Therefore, the correct answer is pronator teres and pronator quadratus.Rate this question:
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- 8.
The elbow flexor that is most effective (strongest) with the forearm in the neutral position is which of the following muscles?
- A.
Biceps brachii
- B.
Brachioradialis
- C.
Brachialis
- D.
Coracobrachialis
Correct Answer
C. BrachialisExplanation
The brachialis muscle is the most effective (strongest) elbow flexor with the forearm in the neutral position. This is because the brachialis muscle is located deep to the biceps brachii and attaches to the ulna, which allows it to generate a greater force for flexion. The biceps brachii is also a strong elbow flexor, but it is more effective when the forearm is supinated (turned palm up). The brachioradialis and coracobrachialis muscles are also elbow flexors, but they are not as strong as the brachialis.Rate this question:
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- 9.
Which ligament spans the elbow longitudinally (long ways) on the little finger side of the elbow?
- A.
Lateral collateral ligament
- B.
Annular ligament
- C.
Medial collateral ligament
- D.
Proximal radioulnar ligament
Correct Answer
C. Medial collateral ligamentExplanation
The medial collateral ligament spans the elbow longitudinally on the little finger side of the elbow. It is responsible for providing stability to the inner side of the elbow joint and preventing excessive side-to-side movement.Rate this question:
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- 10.
The bony end landmark of the ulna, which forms the prominent posterior point of the elbow is which of the following?
- A.
Olecranon fossa
- B.
Olocranon Process
- C.
Coroniod process
- D.
Radial head
Correct Answer
B. Olocranon ProcessExplanation
The bony end landmark of the ulna that forms the prominent posterior point of the elbow is the olecranon process. This bony projection can be easily palpated and is important for the attachment of muscles and ligaments involved in elbow movement. The olecranon process acts as a lever during extension of the forearm and provides stability to the elbow joint. The other options mentioned, such as the olecranon fossa, coronoid process, and radial head, are not the correct answer as they are different anatomical structures within the elbow joint.Rate this question:
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- 11.
The broad, flat membrane located at the posterior lateral side of the radius at the distal end is called the?
- A.
Thoracolumbar fascia
- B.
Joint capsule
- C.
Interosseous membrane
- D.
Annular ligament
Correct Answer
C. Interosseous membraneExplanation
The interosseous membrane is a broad, flat membrane located at the posterior lateral side of the radius at its distal end. It serves as a connection between the radius and ulna bones in the forearm, providing stability and support to the joint. The interosseous membrane helps to distribute forces between the two bones during movement and also allows for slight rotation of the radius around the ulna.Rate this question:
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- 12.
The bony landmark located at the posterior lateral side of the radius at the distal end is called the?
- A.
Olocranon process
- B.
Radial tuberosity
- C.
Radial head
- D.
Styloid process
Correct Answer
D. Styloid processExplanation
The bony landmark located at the posterior lateral side of the radius at the distal end is called the styloid process.Rate this question:
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- 13.
The weakness of the pronator teres muscle could indicate trauma to which of the following nerves?
- A.
Musculocutaneous nerve
- B.
Median Nerve
- C.
Ulnar nerve
- D.
Radial Nerve
Correct Answer
B. Median NerveExplanation
The weakness of the pronator teres muscle could indicate trauma to the Median Nerve. The pronator teres muscle is innervated by the Median Nerve, which means that damage or trauma to this nerve can result in weakness or paralysis of the muscle. The other nerves listed (Musculocutaneous, Ulnar, and Radial) do not innervate the pronator teres muscle, so damage to these nerves would not cause weakness in this specific muscle.Rate this question:
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- 14.
The weakness of the biceps brachii muscle could indicate Trauma to which of the following nerves?
- A.
Musculocutaneous Nerve
- B.
Median nerve
- C.
Ulnar nerve
- D.
Radial Nerve
Correct Answer
A. Musculocutaneous NerveExplanation
The weakness of the biceps brachii muscle suggests trauma to the musculocutaneous nerve. The musculocutaneous nerve innervates the biceps brachii muscle, which is responsible for flexing the elbow joint. If there is weakness in this muscle, it indicates damage or trauma to the musculocutaneous nerve, which supplies the motor function to the biceps brachii muscle.Rate this question:
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- 15.
The weakness of the Triceps brachii muscle could indicate trauma to which of the following nerves?
- A.
Musculocutaneous nerve
- B.
Medial Nerve
- C.
Ulnar Nerve
- D.
Radial Nerve
Correct Answer
D. Radial NerveExplanation
Weakness in the Triceps brachii muscle may indicate trauma to the radial nerve. The radial nerve innervates the Triceps brachii, responsible for extending the elbow joint. Damage to this nerve can lead to weakness or paralysis of the Triceps brachii muscle, affecting elbow extension and overall arm function.Rate this question:
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- 16.
The carrying angle at the elbow exists because of which of the following phenomena at the distal end of the humerus?
- A.
The lateral structures extend farther distally the the medial structures
- B.
The medial stuctures extend farther distally the the lateral structures
- C.
The anterior structures extend farther distally than the posterior structures
- D.
The posterior structures extend farther than the anterior structures
Correct Answer
B. The medial stuctures extend farther distally the the lateral structuresExplanation
The carrying angle at the elbow exists because the medial structures extend farther distally than the lateral structures. This anatomical difference causes the forearm to naturally angle away from the body when the arm is fully extended.Rate this question:
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- 17.
Elbow extension occurs in which plane and through which Axis?
- A.
Transverse plane through a vertical axis
- B.
Frontal plane through a sagittal axis
- C.
Sagittal plane through a frontal axis
- D.
Transverse plane through a transverse axis
Correct Answer
C. Sagittal plane through a frontal axisExplanation
Elbow extension occurs in the sagittal plane through a frontal axis. The sagittal plane divides the body into left and right halves, while the frontal axis runs from side to side. Elbow extension refers to straightening or extending the elbow joint, which involves the movement of the forearm away from the upper arm in the sagittal plane around the frontal axis.Rate this question:
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- 18.
Measured from the position of the forearm in neutral or mid-position, which of the following is true regarding normal ROM for pronation and supination?
- A.
There is more supination than pronation
- B.
There is more pronation than supination
- C.
There are equal amounts of available pronation and supination
- D.
It depends on how much elbow extension the arm is placed in to measure the motion.
Correct Answer
A. There is more supination than pronationExplanation
The correct answer is "There is more supination than pronation." This means that the forearm has a greater range of motion in the supination direction compared to pronation.Rate this question:
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- 19.
The position of the elbow and shoulder that could potentially make the biceps brachii muscle actively insufficient would be which of the following?
- A.
Shoulder extension and elbow flexion
- B.
Shoulder flexion and elbow flexion
- C.
Shoulder flexion and elbow flexion
- D.
Shoulder extension and elbow extension
Correct Answer
C. Shoulder flexion and elbow flexionExplanation
When the shoulder is flexed and the elbow is flexed, the biceps brachii muscle is in a shortened position. This means that the muscle is already contracted, and further flexion at both joints would not allow the muscle to generate a strong contraction. This is known as active insufficiency, where the muscle is unable to produce an optimal force due to being in a shortened position at both joints. Therefore, shoulder flexion and elbow flexion would potentially make the biceps brachii muscle actively insufficient.Rate this question:
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- 20.
When you have a patient do a chair push up to strengthen the elbow triceps, what type of kinetic chain activity is this?
- A.
Open chain
- B.
Closed Chain
- C.
This exercise has elements of both closed and open chains
- D.
Neither
Correct Answer
B. Closed ChainExplanation
When a patient performs a chair push up to strengthen the elbow triceps, it is considered a closed chain activity. In a closed chain activity, the distal segment of the body (in this case, the hands) is fixed or in contact with a stable surface (the chair), while the proximal segment (the upper body) moves. In this exercise, the hands are fixed on the chair while the upper body moves up and down, making it a closed chain activity.Rate this question:
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- 21.
A common elbow pathology often caused by repetitive wrist extension activities is which of the following?
- A.
Medial epicondylitis
- B.
Lateral epicondylitis
- C.
Tendonitis of biceps tendon
- D.
Volkmann's ischemic contracture
Correct Answer
B. Lateral epicondylitisExplanation
Lateral epicondylitis, also known as tennis elbow, is a common elbow pathology caused by repetitive wrist extension activities. It is characterized by inflammation and pain on the outer side of the elbow. This condition is commonly seen in individuals who engage in activities such as tennis, painting, or typing, which involve repetitive use of the wrist and forearm muscles. Medial epicondylitis, on the other hand, refers to inflammation and pain on the inner side of the elbow, and is caused by repetitive wrist flexion activities. Tendonitis of the biceps tendon and Volkmann's ischemic contracture are unrelated conditions.Rate this question:
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- 22.
Your patient has point tenderness at the common flexor origin at the elbow. Given this symptom, which diagnosis is likely?
- A.
Medial epicondylitis
- B.
Lateral epicondylitis
- C.
Tendonitis of biceps tendon
- D.
Volkmann's ischemic contracture
Correct Answer
A. Medial epicondylitisExplanation
Point tenderness at the common flexor origin at the elbow is a characteristic symptom of medial epicondylitis, also known as golfer's elbow. This condition is caused by inflammation or irritation of the tendons that attach to the medial epicondyle, resulting in pain and tenderness on the inner side of the elbow. Lateral epicondylitis, also known as tennis elbow, would cause pain on the outer side of the elbow. Tendonitis of the biceps tendon would cause pain in the front of the elbow, and Volkmann's ischemic contracture is a condition characterized by muscle and nerve damage due to decreased blood flow, which would not typically present with point tenderness at the common flexor origin.Rate this question:
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Current Version
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Feb 19, 2024Quiz Edited by
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Nov 05, 2011Quiz Created by
Mj0409
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