Scapulohumeral Muscles Flashcards Preview

620: Clinical Human Anatomy > Scapulohumeral Muscles > Flashcards

Flashcards in Scapulohumeral Muscles Deck (24)
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2
Q

Origin of Deltoid

A

Lateral 1/3 clavicleAcromionSpine of scapula

3
Q

Insertion of deltoid

A

Deltoid Tuberosity

4
Q

What innervates the deltoid?

A

Axillary Nerve

5
Q

What does the deltoid do?

A

AbductionExtension (posterior deltoid)External Rotation (posterior deltoid)Flexion (anterior deltoid)Interal Rotation (anterior deltoid)

6
Q

Origin of the teres major

A

Inferior scapular angle

7
Q

What does the teres major do?

A

Adduction
Internal Rotation
Extension

8
Q

What innervates the teres major?

A

Lower Subscapular Nerve

9
Q

Insertion of the teres major

A

Medial lip of intertubercular sulcus

10
Q

Origin of the supraspinatus

A

Suprascapular fossa

11
Q

Insertion of the supraspinatus

A

Superior facet of greater tubercle of humerus

12
Q

What innervates the supraspinatus?

A

Suprascapular Nerve

13
Q

What does the supraspinatus do?

A

Abduction

14
Q

Origin of the infraspinatus

A

Inferior scapular fossa

15
Q

Insertion of the infraspinatus

A

Medial facet of greater tubercle of humerus

16
Q

What innervates the infraspinatus?

A

Suprascapular Nerve

17
Q

What does the infraspinatus do?

A

External Rotation

18
Q

Origin of the teres minor

A

Upper 2/3 of lateral border of scapula

19
Q

Insertion of the teres minor

A

Inferior facet of greater tubercle of humerus

20
Q

What innervates the teres minor?

A

Axillary Nerve

21
Q

What does the teres minor do?

A

ER and slight extension

22
Q

Origin of the subscapularis

A

Subscapular fossa

23
Q

What does the subscapularis do?

A

Internal rotation

Slight adduction

24
Q

What innervates the subscapularis?

A

Upper and Lower subscapular nerves

25
Q

Insertion of the subscapularis

A

Lesser tubercle of humerus