Unit 1: Lecture 12 Flashcards Preview

OT 716 - Unit I > Unit 1: Lecture 12 > Flashcards

Flashcards in Unit 1: Lecture 12 Deck (16):
1

The arm is sometimes referred to as the...

brachium

2

The bulk of the arm is formed by four muscles (innervations in parenthesis):

- biceps brachii (musculocutaneous)
- brachialis, 2 heads (musculocutaneous)
- coracobrachialis (musculocutaneous)
- triceps brachii, 3 heads (radial nerve)

3

Muscles of arm are organized by a deep fascia which is continuous with axillary fascia, called...

brachial fascia

4

Medial brachial cutaneous nerve (from medial cord) innervates...

skin of arm

5

Medial antebrachial cutaneous nerve (from medial cord) innervates...

skin of forearm

6

Posterior surface of the arm is supplied by the...

posterior brachial cutaneous nerve, which is a branch of the radial nerve

7

Lateral and anterolateral surfaces of the arm supplied by...

superior and inferior lateral brachial cutaneous nerves (branches of axillary and radial nerves, respectively)

8

Skin of shoulder is also supplied by the...

superior lateral brachial cutaneous nerve

9

Biceps tendon of the long head of the biceps brachii runs in the _________ and is held in place by the ________ bridging the intertubercular groove

intertubercular groove; transverse humeral ligament

10

Directly beneath the belly of the biceps brachii is the distal extension of the __________, the __________

axillary artery; brachial artery

11

The brachial artery begins at....

the lower border of the teres major

12

The brachial artery courses along the _______ aspect of the arm in a thickening of the brachial fascia called the _________

medial; medial intermuscular septum

13

Branches of brachial artery (2)

- muscular branches (supply anterior compartment of arm; biceps brachia, the brachialis, and coracobrachialis)
- Profunda brachii (supplies triceps, and runs w/ radial nerve around the back of the shaft of the humerus)

14

Median nerve

- runs w/ brachial artery, and lateral to the artery before elbow. After elbow, they cross and median nerve is more medial

15

Brachial veins

- two in number, located medially & laterally
- run with basilic vein to form the axillary vein at lower border of teres major

16

Lateral and medial intermuscular septum

- prominent aggregations of the deep fascia
- each is attached to humerus, then each courses to the superficial aspect of the arm
- median nerve and brachial vessels course down the medial aspect of arm WITHIN the medial inter muscular septum
- the lateral intermuscular septum contains radial nerve.