Shoulder and Elbow Anatomy Flashcards Preview

Systems: MSK AB > Shoulder and Elbow Anatomy > Flashcards

Flashcards in Shoulder and Elbow Anatomy Deck (42)
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1

Describe the arterial vasculature of the arm and forearm.

-Subclavian artery
-Axillary artery
-Brachial artery
-Radial and ulnar arteries

2

What does the shoulder girdle consist of?

-Scapula
-Clavicle
-Associated musculature

3

Where do the muscles which move the scapula take their attachment from?

The trunk

4

Name the dorsal muscles.

-Levator scapulae
-Rhomboids
-Latissmus dorsi
-Trapezius

5

Describe the position of serratus anterior.

It is a ventrolateral muscle which attaches to the medial border of the scapula

6

What is the action of serratus anterior?

Protracts and stabilise the pectoral girdle

7

What is the ventral musculature of the trunk..

-Pectoralis major
-Serratus anterior

8

What is the action of the ventral musculature?

Adduction

9

What actions occur as a result of glenohumeral rhythm?

-Abrduction of the humerus
-Upward rotation of the scapula

10

What produces the contour of the shoulder?

Deltoid muscle

11

What movements is the deltoid responsible for?

-Involved in almost all movement of the arm at the glenohumeral joint
-Chiefly abduction

12

Name the posterior group of the short scapular muscles.

-Supraspinatous
-Infraspinatous
-Teres minor
-Teres major

13

What is the action of the posterior short scapular muscles?

-Abduction
-External rotation

14

What muscle is found in the anterior group of the short scapular muscles?

Subscapularis

15

What is the action of the anterior short scapular muscles?

Internal rotation

16

What muscle spans the posterior surface of the humerus??

Triceps brachii

17

What is the action of triceps brachii?

Extends the arm and forearm

18

What is the antagonist of the triceps?

Biceps brachii

19

What are the attachments of biceps brachii?

Scapula to the radius

20

What does the attachment of the biceps at the radius allow?

Flexion and supination of the forearm

21

What action does brachialis have?

Powerful flexor of the elbow

22

What action does brachioradialis have?

Strong flexor but only in the mid position

23

What movements is the ulna involved in at the forearm?

Flexion and extension of the elbow joint

24

What movements is the radius involved in at the forearm?

-Flexions and extension of the elbow joint
-Prontation and supination

25

How is the radius able to be involved in pronation and supination?

Moves around the ulna by articulating at the superior and inferior radioulnar joints

26

What is the most powerful supinator?

Biceps brachii

27

What are the antagonists of biceps brachii (supinator power)?

-Pronator teres
-Pronator quardatus

28

What roots form the brachial plexus?

C5-T1

29

Name the trunks of the brachial plexus.

-Superior
-Middle
-Inferior

30

Name the divisions of the brachial plexus.

-Anterior
-Posterior