HAE - Arm

Question 1

radial groove

Answer 1

On posterior side of midshaft of humerus

Question 2

capitulum

Answer 2

rounded protuberance on distal aspect of the humerus that articulates with the head of the radius at elbow joint

Question 3

trochlea

Answer 3

pulley-shaped structure on distal aspect of humerus that articulates with trochlear notch of ulna at the elbow joint

Question 4

coronoid fossa

Answer 4

depression on anterior distal surface of the humerus that receives coronoid process of the ulna during flexion of the elbow joint

Question 5

olecranon fossa

Answer 5

depression on posterior distal surface of humerus that receives olecranon of ulna during extension of elbow joint

Question 6

medial and lateral epicondyles

Answer 6

prominences of distal humerus on medial and lateral side of elbow

Question 7

ulnar groove

Answer 7

groove in medial aspect of distal humerus for ulnar nerve

Question 8

supracondylar ridges

Answer 8

extend superiorward from epicondyls; attachments for muscles of the forearm

Question 9

humeroradial joint

Answer 9

joint between capitulum and head of the radius; shallow

Question 10

trochlear notch

Answer 10

concave region on proximal end of ulna that articulates with trochlea of humerus

Question 11

humeroulnar joint

Answer 11

joint between trochlea of humerus and trochlear notch of the ulna; stable

Question 12

proximal radioulnar joint

Answer 12

joint between proximal portions of radius and ulna

Question 13

anular ligament

Answer 13

holds together the proximal radioulnar joint ; permits pronation and supination

Question 14

pronation

Answer 14

in anatomical position, turning the palm towards the posterior

Question 15

supination

Answer 15

Opposite of pronation (turn palm to face anterior)

Question 16

collateral ligaments

Answer 16

(radial and ulnar) collateral ligaments prevent movements other than flexion and extention

Question 17

intermuscular septum

Answer 17

separates arm into anterior (flexor) and posteror (extensor) compartments; medial and lateral; thick layer of fascia

Question 18

flexor compartment

Answer 18

anterior side of arm; contains 3 muscles that flex the arm

Question 19

extensor compartment

Answer 19

posterior side of arm; contains triceps

Question 20

coracobrachialis

Answer 20

O: coracocoid process, I: midshaft of humerus on medial side, N: musculocutaneous, A: flexs and adducts at glenohumeral joint

Question 21

biceps brachii

Answer 21

O: short head = coracoid process, long head = supraglenoid tubercle of scapula, I: radial tuberosity, N: musculocutaneous, A: weak flexor of shoulder, powerful flexor at supinator at elbow

Question 22

brachialis

Answer 22

O: distal half of anterior humerus, I: ulnar tuberosity, N: musculocutanous, A: flexor at elbow

Question 23

radial tuberosity

Answer 23

bony prominance on proximal portion of radius, insertion for biceps brachii

Question 24

triceps brachii

Answer 24

O: long head = infraglenoid tubercle, lateral head: posterior side of humerus superior to radial groove, medial head: posterior side of humerus inferior to radial groove, I: Olecranon of ulna, N: Radial nerve, A: extends the forearm (long head can also extent arm)

Question 25

infraglenoid tubercle

Answer 25

small bump on inferior aspect of glenoid cavity that provides origin for long head of triceps brachii

Question 26

radial groove

Answer 26

groove on shaft of humerus containing radial nerve and deep brachial artery

Question 27

radial nerve

Answer 27

terminal branch of posterior cord of brachial plexus; innervates all muscles on posteior compartment of arm and extensor compartment of forearm

Question 28

ulnar tuberosity

Answer 28

Bony prominence on anterior suface of ulna, distal to coronoid process, insertion of brachiallis

Question 29

musculocutaneous nerve

Answer 29

arises from lateral cord of brachial plexus. ID: pierces coracobrachialis, travels b/t biceps and brachialis, emerges lateral to biceps tendon @ elbow where name changes to lateral antebracial cutaneous nerve

Question 30

lateral antebrachial cutaneous nerve

Answer 30

innervates skin of anterolateral forearm; derives from musculocutaneous nerve @ elbow

Question 31

median nerve

Answer 31

no branches in the arm; arises from contributions of lateral and medial cords of brachial plexus

Question 32

ulnar nerve

Answer 32

no brances in the arm, comes from medial cord of bracial plexus

Question 33

bracial artery

Answer 33

axillary artery becomes brachial artery as it passes teres major

Question 34

Arteries of arm

Answer 34

Question 35

Veins of arm

Answer 35

Question 36

Veins of cubital fossa

Answer 36

Question 37

cubital fossa

Answer 37

anterior aspect of elbow

Question 38

Neves and arteries of cubital fossa

Answer 38

Question 39

bicipital aponeurosis

Answer 39

flat broad tendon overlying cubital fossa arteries and nerves