Muscles of the arm Flashcards Preview

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Flashcards in Muscles of the arm Deck (17):
1

Origins of biceps brachii

Long head originates from supraglenoid fossa of scapula
Short head originates from coracoid process of scapula

2

What are the muscles of the arm

Biceps brachii,
Brachialis,
Coracobrachialis,
Triceps brachii

3

Attachment of biceps brachii

Radial tuberosity

4

Action of biceps brachii

Mainly supination of forearm
Flexion at elbow and shoulder

5

What is nervous and arterial supply to BBC muscles

Musculocutaneous nerve
Brachial artery

6

Action of brachialis

Flexion at elbow

7

Origin of brachialis

Medial and lateral surfaces of humeral shaft

8

Attachment of brachialis

Ulnar tuberosity (just distal to elbow)

9

Origin of coracobrachialis

Coracoid process of scapula

10

Attachment of coracobrachialis

Medial surface of humeral shaft at the level of the deltoid tubercle

11

Action of coracobrachialis

Flexion of arm at shoulder

12

Origins of triceps brachii

Long head originates from infraglenoid tubercle
Medial head originates from humerus (inferior to radial groove)
Lateral head originates from humerus (superior to radial groove)

13

Attachment of triceps brachii

Olecranon of ulna

14

Action of triceps brachii

Extension of arm at elbow

15

Innervation of triceps brachii

Radial nerve

16

Which biceps brachii tendon is most likely to rupture

Long head tendon

17

Why don't you notice much upper limb weakness in biceps tendon rupture?

Action of brachialis and supinator muscles

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