2.5 Scapular & Pectoral Regions Flashcards Preview

Gross Anatomy > 2.5 Scapular & Pectoral Regions > Flashcards

Flashcards in 2.5 Scapular & Pectoral Regions Deck (70)
Loading flashcards...
1

What forms the girdle of the upper limb?

clavicle and scapula

2

The head of the humerus articulates with the ... of the scapula

glenoid cavity

3

The inter tubercular groove is between the tubercles and holds the tendon of the ...

long head of the biceps brachia m.

4

"V" shaped roughened area on lateral aspect of mid shaft of humerus where deltoid m. inserts

Deltoid tuberosity

5

What muscle does elevation action at pectoral girdle?

levator scapulae

6

What muscle does depression action at pectoral girdle?

Trapezius

7

What muscle does protraction (abduction) action at pectoral girdle?

Pectoralis minor

8

What muscle does retraction (adduction) action at pectoral girdle?

Rhomboid major and minor

9

What muscle does lateral rotation (upward) action at pectoral girdle?

Trapezius

10

What muscle does medial rotation (downward) action at pectoral girdle?

Rhomboid major and minor

11

What muscle does flexion at the glenohumeral joint?

Deltoid (anterior fibers)

12

What muscle does extension at the glenohumeral joint?

Deltoid (posterior fibers), latissimus dorsi

13

What muscle does abduction at the glenohumeral joint?

Deltoid (middle fibers) , supraspinatus (initiates first 15 degrees)

14

What muscle does adduction at the glenohumeral joint?

Pectorals major, latissimus doors, theres major

15

What muscle does medial rotation at the glenohumeral joint?

Subscapularis, teres major, deltoid (anterior fibers)

16

What is the main source of arterial blood for the upper limb?

subclavian artery

17

The subclavian artery gives rise to several branches including the ... which supplies muscles of the scapula via ... and ... arteries

thyrocervical trunk (supra scapular and transverse cervical arteries)

18

The subclavian artery becomes the ... as it crosses the lateral border of the first rib.

axillary artery

19

What nerve innervates the trapezius?

spinal accessory n.

20

What nerve innervates the latissimus dorsi?

Thoracodorsal n.

21

What nerve innervates the levator scapulae?

dorsal scapular n.

22

What nerve innervates the rhomboid minor?

dorsal scapular n.

23

What nerve innervates the rhomboid major?

dorsal scapular n.

24

What is the innervation of the pectoralis major m?

medial and lateral pectoral nerves

25

What is the action of the pectoralis major m?

adducts and medially rotates humerus, flexes humerus

26

Proximal attachment of pectoralis major m?

clavicular head and sternocostal head

27

What is the distal attachment of the pectoralis major m?

lateral lip of inter tubercular sulcus of humerus

28

What is the innervation of the pectoralis minor m?

medial pectoral n.

29

What is the action of pectoralis minor m?

protracts, depresses, stabilizes scapula

30

What is the proximal attachment of the pectoralis minor m?

ribs 3-5