Brachial Plexus Anatomy

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Which nerve innervates all intrinsic muscles of the hand, except for the three thenar muscles and the two lateral lumbrical muscles?

Sciatic nerve

Radial nerve

Median nerve

Ulnar nerve (correct)

Which nerve carries fibers from C7 and often has a communicating branch from the lateral root of the median nerve?

Radial nerve

Sciatic nerve

Ulnar nerve (correct)

Median nerve

Which nerve passes through the forearm and innervates the flexor carpi ulnaris muscle and the medial half of the flexor digitorum profundus muscle?

Median nerve

Ulnar nerve (correct)

Radial nerve

Sciatic nerve

Which nerve originates from the posterior cord of the brachial plexus and innervates muscles associated with the shoulder region or the posterior wall of the axilla?

Superior subscapular nerve Signup and view all the answers

Which division of the brachial plexus is divided into supraclavicular and infraclavicular parts by the clavicle?

Posterior cord Signup and view all the answers

Which nerve passes into the arm and forearm, originating from the posterior cord of the brachial plexus?

Radial nerve Signup and view all the answers

Where does the lateral pectoral nerve penetrate to innervate the pectoralis major muscle?

Clavipectoral fascia Signup and view all the answers

Which nerve innervates all three flexor muscles in the anterior compartment of the arm?

Musculocutaneous nerve Signup and view all the answers

What is the termination point of the musculocutaneous nerve?

Lateral cutaneous nerve of the forearm Signup and view all the answers

Which branch of the lateral cord joins a similar branch from the medial cord to form the median nerve?

Lateral root of the median nerve Signup and view all the answers

The infraclavicular branches are products of which type of nerve formation?

Peripheral nerves Signup and view all the answers

How is the brachial plexus divided based on its relation to the clavicle?

Infraclavicular and supraclavicular parts Signup and view all the answers

Which part of the brachial plexus contains contributions from C5 to C7?

Lateral cord Signup and view all the answers

Where does the suprascapular nerve originate from?

Anterior divisions of the superior and middle trunks Signup and view all the answers

Which nerve innervates the rhomboid major and minor muscles?

Dorsal scapular nerve Signup and view all the answers

Where does the long thoracic nerve originate from?

Anterior rami of C5, C6, and C7 Signup and view all the answers

Which part of the brachial plexus is positioned lateral to the axillary artery?

Lateral cord Signup and view all the answers

Which part of the brachial plexus originates from all three posterior divisions?

Posterior cord Signup and view all the answers

How many branches arise from the lateral cord of the brachial plexus?

3 Signup and view all the answers

Which nerve originates entirely or partly from the lateral cord of the brachial plexus?

The lateral root of the median nerve Signup and view all the answers

Which part of the brachial plexus gives rise to nerves associated with posterior compartments of the arm and forearm?

Divisions Signup and view all the answers

What divides each trunk of the brachial plexus into anterior and posterior divisions?

Cervico-axillary canal Signup and view all the answers

Brachial Plexus Anatomy

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Questions and Answers

Which nerve innervates all intrinsic muscles of the hand, except for the three thenar muscles and the two lateral lumbrical muscles?

Which nerve carries fibers from C7 and often has a communicating branch from the lateral root of the median nerve?

Which nerve passes through the forearm and innervates the flexor carpi ulnaris muscle and the medial half of the flexor digitorum profundus muscle?

Which nerve originates from the posterior cord of the brachial plexus and innervates muscles associated with the shoulder region or the posterior wall of the axilla?

Which division of the brachial plexus is divided into supraclavicular and infraclavicular parts by the clavicle?

Which nerve passes into the arm and forearm, originating from the posterior cord of the brachial plexus?

Where does the lateral pectoral nerve penetrate to innervate the pectoralis major muscle?

Which nerve innervates all three flexor muscles in the anterior compartment of the arm?

What is the termination point of the musculocutaneous nerve?

Which branch of the lateral cord joins a similar branch from the medial cord to form the median nerve?

The infraclavicular branches are products of which type of nerve formation?

How is the brachial plexus divided based on its relation to the clavicle?

Which part of the brachial plexus contains contributions from C5 to C7?

Where does the suprascapular nerve originate from?

Which nerve innervates the rhomboid major and minor muscles?

Where does the long thoracic nerve originate from?

Which part of the brachial plexus is positioned lateral to the axillary artery?

Which part of the brachial plexus originates from all three posterior divisions?

How many branches arise from the lateral cord of the brachial plexus?

Which nerve originates entirely or partly from the lateral cord of the brachial plexus?

Which part of the brachial plexus gives rise to nerves associated with posterior compartments of the arm and forearm?

What divides each trunk of the brachial plexus into anterior and posterior divisions?

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