Unit 3: brachial plexus Flashcards
Name the nerves that receives the gray rami communicans from the middle cervical ganglion of the sympathetic trunk
C5 and C6
name two nerves that form the inferior trunk of the brachial plexus
C8 and T1
The eighth cervical ventral ramus contributes the white ramus communicans to the cervicothoracic ganglion T/F
False, don’t carry sympathetic
the supraclavicular branches are from the roots and trunks of the brachial plexus T/F
false, cervical plexus does
The longus collies are innervated by ___
C2-C8
The nerve to the phrenic nerve from the fifth cervical ventral ramus joins the phrenic nerve at the front of the ___ muscle
scalenus anterior/ anterior scalene
The suprascapular nerve arises from the ___ of the brachial plexus
superior trunk
the suprascapular nerve enters the supraspinous fossa through the scapular notch above the superior transverse scapular ligament T/F
false, inferior
the lateral cord of the brachial plexus is formed by ___ division of ___
anterior division of upper and middle trunks of C5-C7
draw the brachial plexus including the roots, trunks, division, cords, and brachial branches
DRAW
name the nerve which distributes the deep medial surface fo the pectoralis major
lateral pectoral nerve of lateral cord
the upper subscapular nerve is from the ___ cord with ___ roots
posterior cord with C5 and C6
Name the nerve which innervates the teres major
lower subscapular nerve of posterior cord
Name he border of the quadrangular space through where the axillary nerve passes superiorly inferiorly medially laterally
superiorly: subscapularis and teres minor
inferiorly: teres major
medially: long head of the triceps brachii
laterally: surgical neck of the humerus
name the nerve which gives off the upper lateral cutaneous nerve of the arm
posterior branch of axillary N
name the nerve which pierces the coracobrachialis
musculocutaneous nerve of lateral cord
The lateral cutaneous nerve of the forearm is continuation of ___ nerve
musculocutaneous
Name the nerve which supplies the skin over the half of the anterior surface of the forearm
lateral cutaneous nerve of forearm of musculocutaneous N
The intercostobrachial nerve communicates with ___ on the arm
medial cutaneous nerve of the arm
Name the nerve whichi arises from two cords of the brachial plexus
median nerve. (lateral cord C5-C7 and medial cord C8-T1)
Name the nerve which locates between two tendons of the flexor digitorum superficialis and the flexor carpi radialis at the proximal to the flexor retinaculum
median nerve
Name the nerves which innervates the flexor pollicis longus ____ of ____
anterior interosseous nerve of the median nerve
Name the nerves which give off he articular nerve to the elbow joint
median N, musculocutaneous N, radial N, and ulnar N
The proximal radio-ulnar joint is innervated by ___ nerve
median N
Name the nerve which innervates the lateral three and one half digits of the palmer surface
palmer cutaneous branch of median N
The ulnar nerve arises from ___ cord with ___ roots
medial cord (C7, C8, and 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 palmeris brevis. ____ of ____
palmer cutaneous branch of the ulnar nerve
Name the nerve which supplies the adductor pollicis ___ of ___
deep terminal branch of the ulnar N
The deep terminal branch of the ulnar nerve supplies following muscles EXCEPT: A. abductor digiti minimi B. opponent digiti minimi C. adductor pollicis D. opponents pollicis
D. Opponent pollicis
The radial nerve arises from the ___ cord/cords with ___ roots
posterior cord with C5-T1
The muscular branches of the radial nerve innervates following muscles, EXCEPT: A. long head of the biceps brachii B. medial head of the triceps brachii C. anconeus D. extensor carpi radialis brevis
A. long head of the biceps brachii
The posterior interosseous nerve innervates following muscles, EXCEPT A. extensor digitorum B. extensor carpi ularis C. abductor pollicis brevis D. extensor indicus
C. abductor pollicis brevis
clutch paralysis can be caused by the injury of ____ nerve/nerves
radial and or ulnar
winging the scapular is caused by the paralysis of the ___ nerve of ___
long thoracic N of C5-C7
Name three nerves which arise from the posterior division of the upper trunk of the brachial plexus
upper subscapular N
lower subscapular N
axillary N
