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Human Anatomy Exam 1 > Lecture 3 > Flashcards

Lecture 3 Flashcards

1
Q

S. I. T. S.

A
  1. Supraspinatus
  2. Infraspinatus
  3. Teres minor
  4. Subscapularis

make rotator cuff

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2
Q

Only muscle that is anterior to the scapula

A

Subscapularis

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3
Q

What is the purpose of rotator cuff?

A

Provides most support

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4
Q

Which muscle is often most damaged and why?

A

Superspinatus

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5
Q

Supraspinatus: origin

A

Supraspinous fossa

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6
Q

Supraspinous: insertion

A

Greater tubercle of the humerus

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7
Q

Supraspinous: innervation

A

Suprascapular nerve

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8
Q

Supraspinous: Action

A

Shoulder abduction

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9
Q

Infraspinatus: origin

A

Infraspinous fossa

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10
Q

Infraspinatus: insertion

A

Greater tubercle of the humerus

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11
Q

Infraspinatus: action

A

Lateral shoulder rotation

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12
Q

Teres minor: origin

A

Superior lateral border of scapula

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13
Q

Teres minor: insertion

A

Greater tubercle of the humerus

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14
Q

Teres minor: innovation

A

Axillary nerve

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15
Q

Teres minor: action

A

Lateral shoulder rotation

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16
Q

Subscapularis: origin

A

Subscapular fossa

17
Q

Subscapularis: insertion

A

Lesser tubercle of the humerus

18
Q

Subscapularis: innervation

A

Upper and lower subscapular nerve

19
Q

Teres major: origin

A

Posterior inferior angle of scapula

20
Q

Teres major: insertion

A

Lesser tubercle of the humerus

21
Q

Teres major : innervation

A

Lower scapular nerve

22
Q

Teres major: action

A

Addicts, extends, and medically rotates shoulder

23
Q

Shoulder impingement

A
  1. Compression occurs in the subacomial space
  2. Common causes are bursitis and Supraspinatus inflammation
  3. Compounded by anterior rotation of the scapula
24
Q

Posterior arm

A
  1. lateral head – posterior body of humerus
  2. long head – infraglenoid tubercle
  3. medial head – same as lateral head
25
Q

Posterior arm: origin

A

Triceps brachii

26
Q

Posterior arm: insertion

A

Decramon process of ulna

27
Q

Posterior arm: action

A

Elbow extension, shoulder Adduction

28
Q

Posterior arm: innervation

A

Radial nerve

Human Anatomy Exam 1 (4 decks)

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