Arm and cubital fossa

Question 1

Describe the attachments of biceps brachii

Answer 1

short head - coracoid process
long head - supraglenoid tubercle of scapula
to
radial tuberosity

Question 2

What movements does bicep brachii prevent

Answer 2

long head - superior movement of humerus
short head - dislocation of glenohumeral joint

Question 3

Describe the innervation of biceps brachii - nerve levels important

Answer 3

musculocutaneous C5-6

Question 4

Describe the action of coracobrachialis

Answer 4

flexion and adduction of arm

Question 5

Describe the innervation of coracobrachialis

Answer 5

musculocutaneous nerve C5-7

Question 6

Describe the innervation of brachialis

Answer 6

musculocutaneous C5-6 and lateral fibres from radial nerve C7

Question 7

Which bone does brachialis attach to

Answer 7

ulna, so no pronation/supination action

Question 8

Describe the innervation to the posterior arm

Answer 8

Radial nerve C6-8

Question 9

Describe the attachments of each head of triceps brachii

Answer 9

long head - infraglenoid tubercle of scapula
medial and lateral - humeral shaft
to
olecranon of ulna

Question 10

Where does the brachial artery start

Answer 10

inferior border of teres major

Question 11

Describe the branches of the brachial artery

Answer 11

profunda brachii
this forms radial and ulnar collateral branches

Question 12

Describe the branches of the ulnar artery

Answer 12

anterior and posterior interosseous branches to deep structures of forearm

Question 13

What bony feature is called the common flexor origin

Answer 13

medial epicondyle

Question 14

Describe the points of articulation at the elbow joint

Answer 14

rounded capitulum of humerus
and head of radius

trochlea of humerus with ulna

Question 15

Describe the anconeus muscle

Answer 15

elbow extensor innervated by radial nerve

Question 16

Describe the boundaries of the cubital fossa

Answer 16

roof - skin, fascia and bicipital aponeurosis
floor - brachialis
lateral - brachioradialis
medial - pronator teres

Question 17

Which veins passes along the roof of the anatomical snuffbox

Answer 17

cephalic vein

Question 18

Which cutaneous nerves are found in the cubital fossa

Answer 18

medial cutaneous nerve from medial cord of BP

lateral cutaneous nerve from musculocutaneous nerve

Question 19

Describe the contents of the cubital fossa from medial to lateral

Answer 19

median nerve
brachial artery
tendon of biceps brachii

Question 20

What type of joint is the elbow

Answer 20

synovial hinge

Question 21

What structures cross the elbow joint capsule and where

Answer 21

anteriorly - brachialis, median nerve and brachial artery

medially - ulnar nerve

Question 22

Which ligament aids in pronation/supination

Answer 22

annular ligament

Question 23

Which collateral ligament contains 3 parts

Answer 23

medial/ulnar

anterior, posterior and oblique

Question 24

Which border is sharp/smooth in the bones of the forearm

Answer 24

interosseous - sharp
subcutaneous - smooth