Instrinsic Muscles of the Thoracic Limb Flashcards Preview

Anatomy Midterm > Instrinsic Muscles of the Thoracic Limb > Flashcards

Flashcards in Instrinsic Muscles of the Thoracic Limb Deck (12)
Loading flashcards...
1

Deltoideus M.

Parts?
Action?
Innervation?

Acromion and Spinous

Action:
- to flex the shoulder

Innervation- axillary nerve

2

Infraspinatus M.

Insertion?
Action?
Innervation?

Insertion- greater tubercle of the humerus

Action:
-Extend & flex joint
-Abduct shoulder & rotate humerus laterally
-Prevent medical rotation & provide lateral stability to shoulder

Innervation - suprascapular nerve

3

Teres Minor M.
Action?
Innervation?

action:
-Flex shoulder
-Rotate shoulder laterally

innervation - axillary nerve

4

Supraspinatus M.
Insertion?
Action?
Innervation?

Insertion - the greater tubercle of the humerus

Action:
Extend & stabilize shoulder

Innervation - suprascapular nerve

5

Subscapularis M.
Insetion?
Action?
Innervation?

Insertion - the lesser tubercle of the humerus

Action:
- adduct, extend, stabilize shoulder joint
-Rotate shoulder joint medially
-Prevent lateral rotation w/ weight

Innervation - subscapular nerve

6

Teres Major
Action?
Innervation?

Action:
- Flex shoulder joint
-Rotate shoulder joint medially
-Prevent lateral rotation w/ weight

Innervation - axillary nerve

7

Coracobrachialis
Action?
Innervation?

Action:
-Adduct, extend, & stabilize shoulder joint

Innervation - musculocutanous nerve

8

Tensor fasciae antebrachii m.

Action?
Innervation?

action - extend the elbow joint
innervation - radial nerve

9

Anconeus m.

action?
innervation?

action- to extend the elbow joint

innervation- radial nerve

10

Biceps brachii m.

origin?
insertion?
action?
innervation?

origin- supraglenoid tubercle

insertion- the ulnar and radial tuberosities

action:
- flex the elbow joint
- extend the shoulder joint

innervation- musculocutaneous nerve

11

Brachialis m.

origin?
insertion?
action?
innervation?

origin- proximal 3rd of the lateral surface of the humerus

insertion- the ulnar and radial tuberosities

action- to flex the elbow joint

innervation- musculotaneous nerve

12

Triceps brachii m.
Heads?
origin?
insertion?
action?
innervation?

origin:
-Long: caudal border of scapula
-Lateral: tricipital line of humerus
-Medial: crest of lesser tubercle of humerus
-Accessory: neck of humerus


insertion- olecranon tuber

Action: extend elbow joint

innervation- radial nerve