Nerve of upper limb

Question 1

musculocutaneous nerve for arm

Answer 1

ARM :
 Enters by passing through coracobrachialis muscle
 Passes between biceps brachii and brachialis muscles

Question 2

MUSCULOCUTANEOUS NERVE for forearm

Answer 2

 Continues in the forearm as Lateral cutaneous nerve of forearm
 Supplies
• Motor-Coracobrachialis,Bicepsbrachiiand
brachialis
• Sensory-skinonthelateralsurfaceofthe forearm

Question 3

median nerve for arm

Answer 3

ARM :
MEDIAN NERVE
 Passes vertically down the medial side of arm
 Related to brachial artery throughout its course  No major branches in arm

Question 4

median nerve for cubital fossa

Answer 4

Cubital fossa :
 Lies medial to brachial artery
 Leaves by passing between two heads of pronator teres muscle

Question 5

median nerve for forearm

Answer 5

FOREARM:
MEDIAN NERVE
 Innervate - muscles in the anterior compartment (except flexor carpi ulnaris and the medial part of flexor digitorum profundus)
 Branches - Anterior interosseous nerve supplies deep muscles and a small palmar branch innervates skin over the base and central palm

Question 6

median nerve for hand

Answer 6

 Enters hand by passing deep to flexor retinaculum and terminates by dividing in to common palmar digital branches
 Supplies thenar muscles and lateral two lumbricals

Question 7

carpal tunnel formed by

Answer 7

 Anteriorly – Flexor retinaculum; attached medially to the Pisiform bone and hook of Hamate; laterally attached to Scaphoid & Trapezium,
 Posteriorly – Scaphoid, Lunate, Triquetrum, Capitate, Trapezoid bones

Question 8

what is carpal tunnel syndrome

Answer 8

 Median nerve passes through the Carpal tunnel
 In conditions like Myxoedema, the Median nerve is compressed & causes paralysis of Thenar muscles (Ape hand deformity)
 Patient also has shooting pain, tingling , loss of sensation in lateral 2/3 of hand

Question 9

nerve injuries for median nerve

Answer 9

Ape hand deformity
Hand Of Benediction
tgn bentuk ok( anterior interosseous syndrome)

Question 10

ulnar nerve for arm

Answer 10

 Enters along with the median nerve and axillary artery
 In the middle of the arm, nerve penetrates medial intermuscular
septum and enters posterior compartment

Question 11

ulnar nerve in forearm

Answer 11

 Enters anterior compartment by passing posterior to medial epicondyle of the humerus
 Innervates only the flexor carpi ulnaris muscle and the medial part of the flexor digitorum profundus muscle
 Two cutaneous branches – Palmar branch, Dorsal branch

Question 12

ulnar nerve for palm

Answer 12

 Enters the hand by passing superficial to the flexor retinaculum and immediately lateral to the pisiform bone
 Divides into a deep branch, which is mainly motor and a superficial branch, which is mainly sensory.
 Deep branch - supplies the hypothenar muscles, the interossei, adductor pollicis, and the two medial lumbricals
 Superficial branch - innervates the palmaris brevis muscle and supply skin on the palmar surface of the little finger and the medial half of the ring finger

Question 13

what radial nerve for arm

Answer 13

 Enters arm lying posterior to brachial artery
 Accompanied by profunda brachii artery, radial nerve enters posterior compartment through lower triangular space and lies in the radial groove directly on bone
 On the lateral side, it passes anteriorly and enters the anterior compartment

Question 14

radial nerve branches in arm

Answer 14

• Muscularbranchestotriceps brachii, brachioradialis, and extensor carpi radialis longus muscles
• Cutaneousbranches-inferior lateral cutaneous nerve of arm and the posterior cutaneous nerve of forearm

Question 15

radial nerve for forearm

Answer 15

 Enters the forearm anterior to the lateral epicondyle of the humerus
 Bifurcates into deep and superficial branches
 The deep branch is predominantly motor and passes between the two heads of the supinator muscle to access and supply muscles in the posterior compartment of the forearm.
 The superficial branch of the radial nerve is sensory and innervates skin on the dorsolateral surface

Question 16

radial nerve for hand

Answer 16

Hand: Superficial branch enters the hand by passing over the anatomical snuffbox and supplies the skin over the dorsolateral aspect of palm and dorsal aspect of lateral digits.

Question 17

wrist drop?

Answer 17

fracturw shaft of humerus- radial nerve

Question 18

axillary nerve

Answer 18

Nerve exits the axilla by passing through the quadrangular space in the posterior wall of the axilla, and enters the posterior scapular region
 It is directly related to the posterior surface of the surgical neck of the humerus.
 Motor supply : innervates the deltoid and teres minor muscles
 Cutaneous branch: superior lateral cutaneous nerve of the arm - carries general sensation from the skin over the inferior part of the deltoid muscle