Podcast
Questions and Answers
Which nerve controls flexion of the wrist and fingers, and opposition of the thumb?
Which nerve controls flexion of the wrist and fingers, and opposition of the thumb?
- Axillary nerve
- Radial nerve
- Ulnar nerve
- Median nerve (correct)
Which nerve innervates some intrinsic hand muscles and can result in sensory loss in the lateral palm and digits 1-3?
Which nerve innervates some intrinsic hand muscles and can result in sensory loss in the lateral palm and digits 1-3?
- Axillary nerve
- Ulnar nerve
- Radial nerve
- Median nerve (correct)
Which nerve controls flexion of the wrist and fingers, especially the pinky and ring fingers?
Which nerve controls flexion of the wrist and fingers, especially the pinky and ring fingers?
- Median nerve
- Ulnar nerve (correct)
- Radial nerve
- Axillary nerve
Which nerve may result in sensory loss in the medial palm and digits 4-5, and the medial half of digit 4?
Which nerve may result in sensory loss in the medial palm and digits 4-5, and the medial half of digit 4?
Which nerve controls flexion at the elbow joint and supination of the forearm?
Which nerve controls flexion at the elbow joint and supination of the forearm?
Innervation of the deltoid and teres minor muscles is primarily controlled by which nerve?
Innervation of the deltoid and teres minor muscles is primarily controlled by which nerve?
Which nerve is responsible for innervating muscles responsible for extension of the elbow, wrist, and fingers?
Which nerve is responsible for innervating muscles responsible for extension of the elbow, wrist, and fingers?
Injuries to which nerve can result in weakness or paralysis of the deltoid and teres minor, leading to difficulty in raising the arm and external rotation?
Injuries to which nerve can result in weakness or paralysis of the deltoid and teres minor, leading to difficulty in raising the arm and external rotation?
Study Notes
Median Nerve
- Controls flexion of the wrist and fingers, and opposition of the thumb.
- Innervates some intrinsic hand muscles, resulting in sensory loss in the lateral palm and digits 1-3.
Ulnar Nerve
- Controls flexion of the wrist and fingers, especially the pinky and ring fingers.
- May result in sensory loss in the medial palm and digits 4-5, and the medial half of digit 4.
Musculocutaneous Nerve
- Controls flexion at the elbow joint and supination of the forearm.
Axillary Nerve
- Innervation of the deltoid and teres minor muscles is primarily controlled by this nerve.
Radial Nerve
- Responsible for innervating muscles responsible for extension of the elbow, wrist, and fingers.
Axillary Nerve
- Injuries can result in weakness or paralysis of the deltoid and teres minor, leading to difficulty in raising the arm and external rotation.
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Description
Test your knowledge on the origin, pathway, function, and clinical significance of the axillary nerve in the brachial plexus. Explore how injuries or compression of this nerve can affect shoulder abduction and arm rotation.
