Upper Limb

Question 1

Muscles in Anterior Upper Arm

Answer 1

Biceps brachii, Coracobrachialis, Brachialis

Question 2

Anterior upper arm actions

Answer 2

flexion of elbow and shoulder

Question 3

Innervation of anterior upper arm

Answer 3

Musculocutaneous (C5, C6, C7)

Question 4

Blood supply of anterior upper arm

Answer 4

Brachial artery with a little axillary artery

Question 5

Muscles of Posterior upper arm

Answer 5

Triceps (3 heads)

Question 6

Major actions of posterior upper arm

Answer 6

elbow and shoulder extension

Question 7

Innervation of triceps

Answer 7

Radial nerve

Question 8

Blood supply of triceps

Answer 8

Profunda brachii (deep brachial artery) and a little from axillary

Question 9

Damage to radial nerve symptoms

Answer 9

Wrist drop, loss of sensation on dorsal hand, weakness in shoulder extension, weakness in thumb opposition

Question 10

Major actions of the anterior forearm muscles

Answer 10

flexion of wrist and fingers and pronation

Question 11

Innervation of anterior forearm

Answer 11

All median nerve except flexor carpi ulnaris and medial part of flexor digitorum profundus (supplied by ulnar nerve)

Question 12

Blood supple to anterior forearm

Answer 12

proximal = brachial, ulnar or ulnar recurrent arteries
Distal = radial or ulnar arteries

Question 13

Damage to median nerve

Answer 13

weakness in flexion of wrist and fingers, loss of sensation on palm + tips of first 2 fingers, weakness of index finger when you push against it

Question 14

Major actions of posterior forearm

Answer 14

extension of wrist and fingers

Question 15

Innervation of posterior compartment

Answer 15

Radial nerve

Question 16

Blood supply of posterior forearm

Answer 16

posterior interosseous artery

Question 17

Innervation of the hand areas

Answer 17

Ulnar = little finger and half of ring finger
Radial = Dorsal surface and thumb
Median = Palm, half of ring finger and top bits of first and middle finger

Question 18

Hand bones - Name them!

Answer 18

Scaphoid, Lunate, Triquetrum, Pisiform, Trapezium, Trapezoid, Capitate, Hamate
Some lovers try positions that they cant handle

Question 19

Function, Innervation and blood supply of traps

Answer 19

elevates and retracts scapula and pulls scapula inferiorly
Accessory nerve (CNXl)
Occipital, superficial and dorsal scapular artery

Question 20

Function, Innervation and blood supply of lats

Answer 20

extends, adducts and medially rotates upper limb
thoracodorsal nerve
thoracodorsal artery

Question 21

Deep muscles of extrinsic shoulder

Answer 21

Levator scapulae, Rhomboid major and minor

Question 22

Major actions of deep muscles of extrinsic shoulder

Answer 22

levator scapulae = elevation of scapula and inferior rotation of glenoid fossa
rhomboids = retraction of scapula and inferior rotation of glenoid fossa

Question 23

innervation of deep muscles of the extrinsic muscles of the shoulder

Answer 23

Dorsal scapular nerve

Question 24

Blood supply of the deep muscles of the extrinsic shoulder

Answer 24

Dorsal scapular artery

Question 25

Function, Innervation and blood supply of the deltoid

Answer 25

Flexion/extension and medial/lateral rotation of the shoulder
innervated by the axillary nerve (C5-6)
Blood supply is the Thoracoacromial, subscapular, anterior and posterior circumflex humeral, brachial arteries

Question 26

Function, Innervation and blood supply of Teres major

Answer 26

adduction and extension of the shoulder and medially rotates arm
innervated by the lower scapular nerve
blood supply is subscapular and posterior circumflex humeral arteries

Question 27

Rotator cuff muscles

Answer 27

supraspinatus, infraspinatus, teres minor and subscapularis

Question 28

major function of RTC muscles

Answer 28

pull humeral head into glenoid and stable head of humerus

Question 29

Innervation of RTC muscles

Answer 29

Supra + infraspinatus = suprascapular nerve
Teres minor = axillary nerve
subscapularis = upper and lower subscapular nerve

Question 30

Blood supply of RTC muscles

Answer 30

Suprascapular, Subscapular and posterior circumflex humeral arteries

Question 31

Damage to axillary nerve

Answer 31

Often due to shoulder dislocations
Shoulder weakness and pain and instability

Question 32

Impingement syndrome

Answer 32

pain and weakness and restricted shoulder movement
Supraspinatus tendon usually affected