Lecture 5 - Muscles Flashcards Preview

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Flashcards in Lecture 5 - Muscles Deck (53):
1

What is the origin of supraspinatus?

supraspinanous fossa of scapula

2

What is the insertion of supraspinatus?

Greater tubercle of humerus

3

What is the nerve of supraspinatus?

Suprascapular n.

4

What is the action of supraspinatus?

Extend and laterally stabilize the shoulder joint

5

What is the origin of infraspinatus?

Infraspinous fossa of scapula

6

What is the insertion of infraspinatus?

lateral side of the greater tuberble of humerus

7

What is the nerve of infraspinatus?

Suprascapular n.

8

What is the action of infraspinatus?

Extend and laterally stabilize or flex the GH joint, abduct the shoulder, rotate shoulder laterally, lateral stability to shoulder joint

9

What does the infraspinatus do when the leg is weight bearing?

Prevents medial rotation

10

What is the origin of the scapular part?

Spine of scapula

11

What is the origin of the acromial part?

Acromion of scapula

12

What is the insertion of the deltoideus?

Deltoid tuberosity of humerus

13

What is the nerve of the deltoideus?

Axillary n.

14

What is the action of the deltoideus?

Flex the shoulder joint

15

What is the origin of the teres major?

caudal angle and adjacent caudal border of scapula, caudal surface of subscapularis

16

What is the insertion of the teres major?

Teres major tuberosity of the humerus

17

What is the nerve of the teres major?

Axillary n.

18

What is the action of the teres major?

Flex shoulder joint, rotate shoulder medially, and prevent lateral rotation when bearing weight

19

What is the origin of the teres minor?

infraglenoid tubercle and dorsal third of caudal border of scapula

20

What is the insertion of the teres minor?

teres minor tuberosity of humerus

21

What is the nerve of the teres minor?

axillary n.

22

What is the action of the teres minor?

Flex shoulder joint, rotate shoulder laterally, and prevent medial rotation when weight bearing

23

What is the origin of the subscapularis?

subscapular fossa of scapula

24

What is the insertion of the subscapularis?

lesser tubercle of humerus

25

What is the nerve of the subscapularis?

subscapular n.

26

What is the action of the subscapularis?

Adduct, extend, and medially stabilize shoulder joint, rotate shoulder medially, when weight bearing prevent lateral rotation

27

What is the origin of the coracobrachialis?

coracoid process of the scapula

28

What is the insertion of the coracobrachialis?

Lesser tubercle of humerus, proximal to teres major tuberosity

29

What is the nerve of the coracobrachialis?

Musculocutaneous n.

30

What is the action of the coracobrachialis?

Adduct, extend, and stabilize shoulder joint

31

What is the origin of the long head?

caudal border of scapula

32

What is the origin of the medial head?

crest of lesser tubercle

33

What is the origin of the accessory head?

neck of humerus

34

What is the origin of the lateral head?

tricipital lines of humerus

35

What is the insertion of the triceps brachii?

olecranon

36

What is the nerve of the triceps brachii?

Radial n.

37

What is the action of the triceps brachii?

Extend elbow and will also flex shoulder

38

What is the origin of the tensor fasciae antebrachii?

fascia covering lateral aspect of latissimus dorsi

39

What is the insertion of the tensor fasciae antebrachii?

olecranon (process)

40

What is the nerve of the tensor fasciae antebrachii?

Radial n.

41

What is the action of the tensor fasciae antebrachii?

Extend elbow

42

What is the origin of the anconeus?

lateral supracondylar crest and the lateral medial epicondyles of the humerus

43

What is the insertion of the anconeus?

lateral end of olecranon (process)

44

What is the nerve of the anconeus?

Radial n.

45

What is the action of the anconeus?

Extend elbow

46

What is the origin of the biceps brachii?

supraglenoid tubercle of scapula

47

What is the insertion of the biceps brachii?

ulnar and radial tuberosities

48

What is the nerve of the biceps brachii?

musculocutaneous n.

49

What is the action of the biceps brachii?

Flex elbow and extend shoulder

50

What is the origin of the brachialis?

proximal third of lateral surface of humerus

51

What is the insertion of the brachialis?

ulnar and radial tuberosities

52

What is the nerve of the brachialis?

Musculocutaneous n.

53

What is the action of the brachialis?

Flex elbow