JH .Anatomy-Upperlimb

Question 1

which joint is a limited ball and socket joint

Answer 1

radiohumeral joint due to limitation of annular ligament

Question 2

Name the main axio-appendicular muscles

Answer 2

trapezius, serratus anteior and rhomboid maj+minor.

Also subclavius, latissimus dorsi and levator scapulae

Question 3

innervation of trapezius

Answer 3

cnXI

Question 4

innervation of serrates anterior

Answer 4

long thoracic nerve

Question 5

what does the dorsal scapula nerve innervate

Answer 5

rhomboid major, minor and elevator scapulae

Question 6

which muscles make up rotator cuff

Answer 6

supraspinatus, infraspinatus, teres minor and subscapularis

Question 7

which of the rotator cuff muscles attach to the greater and less tuberosities

Answer 7

greater tuberosity - supraspinatus, infraspinatus, theres minor.
Lesser - subscapularis

Question 8

shoulder joint made of

Answer 8

head of humerus in gleaned fossa

Question 9

anterior compartment of arm muscles

Answer 9

biceps brachii, brachialis and coracobrachialis.

Question 10

innervation and action of anterior compartment of arm muscles

Answer 10

musculocutaneous nerve.

flexion of arm and forearm. (biceps also supinates forearm)

Question 11

posterior compartment of arm

Answer 11

triceps brachii

Question 12

innervation and action of triceps brachii

Answer 12

extension of arm and forearm.

radial nerve.

Question 13

forearm anterior compartment muscles

Answer 13

superfical - pronator teres, flexor carpi radialis, palmar longus and flexor carpi ulnaris

Intermediate layer - flexor digitorum superficialis

deep layer - flexor pollicus longs, flexor digitorum proudness and pronator quadratus.

Question 14

innervation of muscle of forearm (anterior compartment)

Answer 14

ALL Median nerve, except flexor carpi ulnaris and medial half of flexor digitorum superficialis (Ulnar nerve)

Question 15

forearm posterior compartment superfical layer muscles

Answer 15

BRACHIORADIALIS. EXTENSOR CARPI RADIALIS LONGUS. EXTENSOR CARPI RADIALIS BREVIS.EXTENSOR CARPI ULNARIS.EXTENSOR DIGITI MINIMI. EXTENSOR DIGITORUM. ANCONEUS

Question 16

action of anterior forearm

Answer 16

Flexion of the wrist and digits, pronation, abduction and adduction of the wrist.

Question 17

action of posterior compartment of forearm

Answer 17

Extension of the wrist and digits, supination, abduction and adduction of the wrist.

Question 18

innervation of posterior forearm

Answer 18

ALL radial nerve

Question 19

posterior forearm muscles

Answer 19

supinator, extensor pollicus brevis, abductor pollicus longus, extensor pollicus longus, extensor indicis.

Question 20

Thenar eminence (thumb base) make up + innervation.

Answer 20

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis

Innervation: Recurrent branch of the median nerve

Question 21

hypothenar eminence make up and innervation

Answer 21

Abductor digiti minimi
Flexor digiti minimi brevis
Opponens digiti minimi

innervation : deep branch of ulnar nerve

Question 22

brachial plexus originated from where

Answer 22

C5-T1

Question 23

route of brachial plexus

Answer 23

passes through axilla to medial arm, cords travel round brachial artery

Question 24

draw the basic brachial plexus

Answer 24

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Question 25

draw the advanced brachial plexus

Answer 25

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Question 26

what are the lumbricles and what do they do

Answer 26

they are intrinsic muscles of the hand that flex the metacarpophalangeal joints and extend the interphalangeal joints.

Question 27

lumbricles attachment

Answer 27

attachment to tendons of flexor digitorum profundus.

Question 28

innervation of lumbricles

Answer 28

medial nerve for lateral two and ulnar nerve for medial two.

Question 29

name the two types of interossei

Answer 29

DAB and PAd - dorsal and palmar

Question 30

invitation of interossei

Answer 30

ulnar nerve

Question 31

what is carpal tunnel

Answer 31

compression of median nerve causing weakness in Thenar muscles. get numbness in digits 1-3 and lateral half of 4.

Question 32

what nerve supplies half of digit 4 and digit 5

Answer 32

ulnar nerve (c8- T1)

Question 33

describe route of arteries in the upper limb.

Answer 33

subclavianarery becomes the axillary artery at the lateral border of the first rib. Becomes brachial artery just below the axilla as it crosses the inferior border of the teres major muscle. terminating distal to the elbow by bifurcating into the radial artery and ulnar artery. Distally, the ulnar artery continues as the superficial palmar arch, and the radial artery continues as the deep palmar arch.  (other anatomses/arteries branching off this core route)

Question 34

what is vena comitantes in upper limb

Answer 34

double wrapped veins around artery (uses pressure)