11 Questions
Which nerve innervates the biceps brachii, coracobrachialis, and brachialis muscles, as well as the skin over the lateral forearm?
Musculocutaneous nerve
Which nerve supplies sensory branches to the posterior and posterolateral aspects of the forearm?
Radial nerve
Which nerve innervates the intrinsic muscles of the thumb and lateral fingers?
Median nerve
Which nerve is formed from C5-C7 spinal nerve roots?
Musculocutaneous nerve
Which nerve is a direct continuation of the posterior cord of the brachial plexus?
Radial nerve
Which nerve supplies sensation to the skin on the medial side of the ring finger and entire small finger?
Ulnar nerve
Which nerve is formed from C6-T1 spinal nerve roots?
Median nerve
Which nerve innervates the triceps brachii, anconeus, and brachioradialis muscles?
Radial nerve
Which nerve innervates the deep muscles of the forearm?
Median nerve
Which nerve is a direct branch of the medial cord of the brachial plexus?
Ulnar nerve
Which nerve innervates the extensor carpi ulnaris muscle?
Radial nerve
Study Notes
- Musculocutaneous nerve innervates biceps brachii, coracobrachialis, and brachialis muscles, and skin over lateral forearm.
- Radial nerve innervates triceps brachii, anconeus, brachioradialis, ECRL, ECRB, supinator, extensor carpi ulnaris, and several digit extensor muscles, and supplies sensory branches to the posterior and posterolateral aspects of the forearm.
- Median nerve innervates wrist flexors, forearm pronators, deep muscles of forearm, intrinsic muscles of the thumb and lateral fingers, and supplies sensation to the lateral palm, palmar surface of thumb, lateral two and one-half fingers.
- Ulnar nerve innervates FCU, medial ½ of FDP, intrinsic muscles of the hand, and supplies sensation to the skin on the medial side of ring finger and entire small finger.
- Musculocutaneous nerve is formed from C5-C7 spinal nerve roots.
- Radial nerve is formed from C5-T1 spinal nerve roots.
- Median nerve is formed from C6-T1 spinal nerve roots.
- Ulnar nerve is formed from C8-T1 spinal nerve roots.
- Radial nerve is a direct continuation of the posterior cord of the brachial plexus.
- Ulnar nerve is a direct branch of the medial cord of the brachial plexus.
Test your knowledge of the brachial plexus and its branches with this quiz! Learn about the musculocutaneous, radial, median, and ulnar nerves, including their innervation of specific muscles and sensory areas. Discover the spinal nerve roots that form each nerve and their relationship to the brachial plexus cords. Perfect for anatomy and physiology students or healthcare professionals looking to brush up on their knowledge of the upper limb innervation.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
