Exam 3 Brachial Plexus Flashcards
Name two nerves that form the inferior trunk of the brachial plexus.
C8 and T1
The lateral cord of the brachial plexus is formed by ___ division of ___
Anterior
the upper and middle trunks
Name the nerves that receive the gray rami communicans from the middle cervical ganglion of the sympathetic trunk.
C5 and C6
The eighth cervical ventral ramus contributes the white ramus communicans to the cervicothoracic ganglion. True or False
False - T1
Name the spinal nerve which sends the white ramus communicans to the stellate ganglion.
T1
The supraclavicular branches of the brachial plexus are from the roots and trunks of the brachial plexus. True or False
True
The longus collies are innervated by
C5, C6, C7, and C8 (C2-C4)
The nerve to the phrenic nerve from the fifth cervical ventral ramus joins the phrenic nerve at the front of ___ muscle.
Scalenus anterior
The supra scapular nerve arises from ___ of the brachial plexus.
Superior trunk
The suprascapular nerve enters the supraspinous fossa through the scapular notch above the superior transverse scapular ligament. True or False
False - inferior not above
Name the nerve which distributes the deep medial surface of the pectoralis major.
Lateral Pectoral N of C5, C6, C7
Name the muscles which are innervated by the medial pectoral nerve
Pectoralis major/minor
The upper subscapular nerve is from the ___ cord with ___ roots.
Posterior
C5, C6
Name the nerve which innervates the latissimus dorsi.
Thoracodorsal of C6, C7, C8
Name the nerve which innervates the teres major
Lower subscapular n of C5, C6
Name the superior border of the quadrangular space through which the axillary nerve passes
Subscapularis
Teres major
Name the inferior border of the quadrangular space
Teres major
Name the medial border of the quadrangular space
Long head of triceps brachialii
Name the lateral border of the quadrangular space
Surgical neck of humerus
Name the nerve which gives off the upper lateral cutaneous nerve of the arm
Posterior branch of the axillary nerve
Name the nerve which pierces the coracobrachialis
Musculocutaneous N of C5, C6, C7
The lateral cutaneous nerve of the forearm is a continuation of ___
Musculocutaneous N
Name the nerve which supplies the skin over the half of the anterior surface of the forearm
Lateral cutaneous N of the forearm
The intercostobrachial nerve communicates with ___ on the arm
Medial cutaneous nerve
Name the nerve which arises from medial and lateral cords of the brachial plexus.
Median N
Name the nerve which locates between two tendons of the flexor digitorum superficialis and the flexor carpi radials at the proximal to the flexor retinaculum
Median N
Name the nerve which innervates the flexor pollicis longus
Anterior osseous n of median N in the forearm
Name the nerves which give off the articular nerve to the elbow joint
Median N
Musculocutaneous N
The proximal radio-ulnar joint is innervated by
Articular branch of the median n
Name the muscles which are innervated by the median nerve in the hand
Flexor pollicis brevis
Abductor pollicis brevis
Opponens pollicis
Name the nerve which innervates the first lumbrical
Palmar digital branches of median n in the hand
The ulnar nerve arises from ___ cord with ___ roots
Medial
(C7) C8 & T1
Name the nerve which lies in a groove on the dorsum of the medial epicondyle.
Ulnar N
The ulnar nerve lays medial/lateral side of the ulnar vessels at the proximal end of the flexor retinaculum.
Medial
Name the nerve which innervates the palmaris brevis
Palmar cutaneous branches of ulnar n
Name the nerve which supplies the adductor pollicis
Deep terminal branches of ulnar n
The deep terminal branch of the ulnar nerve supplies the following, except: Abductor digiti minimi, opponens digiti minimi, adductor pollicis, opponens pollicis
Opponens pollicis
The radial nerve arises from the ___ cords with ___ roots
Posterior
C5, C6, C7, C8 (T1)
The muscular branches of the radial nerve innervates the following excepts: Long head of biceps brachii, Medial head of triceps brachia, Anconeus, Extensor carpi radialis brevis
Long head of the biceps brachii
The posterior interosseous nerve innervates the following except: Extensor digitorum, extensor carpi ulnaris, abductor pollicis brevis, extensor indicus
Abductor pollicis brevis
Erb’s paralysis can be caused by the injury of ___ or ___
Upper trunk
C5, C6
Crutch paralysis can be caused by the injury of
Radial and/or ulnar nerves
Winging of the scapula is caused by the paralysis of ___ nerve of ___
Long thoracic N of C5, C6, C7
Name the injured nerve which might cause the wrist drop
Radial nerve
