Brachium and Cubital Fossa Flashcards Preview

MSK - Upper Limb > Brachium and Cubital Fossa > Flashcards

Flashcards in Brachium and Cubital Fossa Deck (22):
1

What fascia is a continuation of the fascia of the shoulder muscles and attaches to the humeral epicondyles and olecranon process?

brachial fascia

2

What does the neurovascular compartment contain?

brachial a/v, median n., medial brachial and antibrachial cutaneous nn, and ulnar nerve

3

Which muscle is the most powerful supinator of the hand above 90 degrees of flexion?

biceps brachii

4

Of the primary arm flexors, which is the most powerful forearm flexor?

brachialis

5

What nerve innervates all by one of the forearm flexors?

musculocutaneous

6

What nerve innervates the brachioradialis?

radial nerve

7

Which muscle has the best mechanical advantage for flexion of the forearm during a handshake?

brachiradialis

8

What are the primary flexors of the forearm?

biceps brachii, brachialis, bracioradialis (is not technically in the anterior compartment but function is the same)

9

What artery supplies the arm?

brachial artery

10

Where does the brachial artery divide into the radial and ulnar arteries?

cubital fossa

11

What branch of the brachial artery accompanies the radial nerve along the radial groove of the humerus?

profunda (deep) brachial a

12

what brachial artery branch arises form the medial aspect of the mid-portion and course with the ulnar nerve to

superior ulnar collateral a.

13

what 3 arterial branches arise from the brachial a.?

profunda (deep) brachial, superior ulnar collateral, inferior ulnar collateral

14

what are the two main nerves that provide innervations to the brachium?

musculocutaneous and radial nerves

15

What nerve courses through the cubital fossa deep to the bicipital aponeurosis where it passes into the forearm between the two heads of the pronator teres muscle?

median (C6, 7, 8, T1)

16

What nerve exits the neurovascular compartment with superior ulnar collateral artery midway in brachium by piercing the posterior lamina of the medial intermuscular septum to course inferiorly along the posterior lamina of the medial intermuscular septum?

ulnar n. (C8, T1)

17

What nerve pierces the coracobrachialis muscle and continues by running inferiorly between the biceps and brachialis muscles.

musculocutaneous n. (C5, 6, 7)

18

What nerve passes laterally to course between the lateral and medial heads of the triceps to posterior surface of humerus and runs in the radial groove with the deep brachial artery?

radial n. (C5-T1)

19

What are the boundaries of the cubital fossa?

lateral- brachioradialis muscle
medial - pronator teres muscle
superior - a line drawn through both humeral epicondyles
roof - deep fascia
floor - brachialis and supinator muscles

20

What is contained in the cubital fossa?

(lateral to medial) tendon of biceps, brachial artery, medial nerve

21

What superficial structures are associated with the cubital fossa?

median cubital vein, lateral antebrachial cutaneous n

22

What deep structure is associated with the cubital fossa?

bifurcation of the radial nerve into its superficial and deep branches.