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Flashcards in Arm Deck (16):
1

Which muscles are innervated by the musculocutaneous nerve? (all)

BBC-
Biceps brachii, brachialis, coracobrachialis

2

Which muscles facilitate the flexion of the elbow joint?

Brachialis, Brachioradialis, Biceps brachii, Pronator teres

3

Which muscles facilitate the extension of the elbow joint?

Triceps brachi, Anconeus

4

Which muscles facilitate supination of forearm?

Supinator, Biceps brachii

5

Which muscles facilitate the pronation of the forearm?

Pronator Teres, Pronator quadratus

6

How many heads does the biceps brachii have? Where do they originate?

Two- short (more medial) and long (more lateral). Short originates coracoid process, long originates supraglenoid tubercle.

7

How many heads does the triceps brachii have? Where do they originate?

Three- medial, lateral, long. Medial: posterior surface of the humerus. Lateral: posterior surface of humerus superior to radial groove. Long: infraglenoid tubercle of scapula.

8

Which muscles are innervated by the radial nerve?

Brachioradialis, triceps brachii, anconeus, supinator (deep branch)

9

What nerve innervates triceps brachii?

Radial nerve

10

What nerve innervates anconeus?

Radial nerve

11

What nerve innervates brachioradialis?

Radial nerve

12

Where does the brachialis orginate and insert?

Origin: distal anterior surface of humerus. Inserts: coronoid process of ulna.

13

Where does the brachioradialis originate and insert?

Origin: lateral supracondylar ridge of humerus. Inserts: lateral styloid process of radius

14

Where does the biceps brachii insert?

Radial tuberosity

15

Which muscle is the main flexor Of the elbow joint?

Brachialis

16

Where does the pronator teres originate and insert?

Origin: medial humeral epicondyle AND coronoid process of ulna. Inserts: lateral radius