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GBE > Shoulder and arm II > Flashcards

Shoulder and arm II Flashcards

1
Q

What are the muscles that make up the rotator cuff?

A 
SITS
Supraspinatus
Infraspinatus
teres minor
subscapularis
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2
Q

What are the compartments of the upper arm?

A

Anterior (flexor) and posterior (extensor)

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3
Q

What are the compartments of the lower arm?

A

Anterior (flexor) and posterior (extensor)

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4
Q

What muscles are in the anterior compartment of the upper arm?

A

Biceps brachii
Coracobrachialis
Brachialis

(BBC)

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5
Q

Describe biceps brachii

A

O: short head - coracoid process of scapula
long head - supraglenoid tubercle of scapula
A: tuberosity of radius + bicipital aponeurosis
I: musculocutaneous nerve (C5,6)
Fn: flexion in all positions + supinates

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6
Q

What is the origin of biceps brachii?

A

Short head: coracoid process of scapula

long head: supraglenoid tubercle of scapula

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7
Q

What is the attachment of biceps brachii?

A

tuberosity of radius + bicipital aponeurosis

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8
Q

What is the innervation of biceps brachii?

A

musculocutaneous nerve (C5,6)

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9
Q

What is the function of biceps brachii?

A

Flexion in all positions and supination of arm

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10
Q

Describe coracobracialis

A

O: coracoid process of scapula
A: middle 1/3 of medial surface of humerus
I: musculocutaneous nerve C5,6,7
Fn: flexion and adduction

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11
Q

What is the origin of coracobrachialis?

A

coracoid process of scapula

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12
Q

What is the attachment of coracobrachialis?

A

middle 1/3 of medial surface of humerus

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13
Q

What is the innervation of coracobrachialis?

A

musculocutaneous nerve C5,6,7

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14
Q

What is the function of coracobrachialis?

A

Flexion of arm and adduction

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15
Q

Describe brachialis

A

O: distal 1/2 of ant surface of humerus
A: coronoid process of tuberosity of ulna
I: musculocutaneous nerve C5,6
Fn: flexion in all positions

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16
Q

What is the origin of brachialis?

A

distal 1/2 of ant surface humerus

17
Q

What is the attachment of brachialis?

A

coronoid process of tuberosity of ulna

18
Q

What is the innervation of brachialis?

A

musculocutaneous nerve C5,6

19
Q

What is the function of brachialis?

A

Flexion in all position

20
Q

What muscles are in the posterior compartment of the upper arm?

A

Triceps brachii

21
Q

Describe triceps brachii

A

O: long head - infraglenoid tubercle of scapula
medial head - posterior surface of humerus, superior to radial groove
lateral head - posterior surface of humerus, inferior to radial groove
A: prox. end of olecranon
I: radial nerve (C7,8,9)
Function: extensor of elbow

22
Q

What is the origin of triceps brachii

A

Long head - infraglenoid tubercle of scapula
medial head - posterior surface of the humerus, superior to radial groove
lateral head - posterior surface of the humerus, inferior to radial groove

23
Q

What is the attachment of the triceps brachii

A

prox end of olecranon

24
Q

What is the innervation of triceps brachii

A

radial nerve C7,8,9

25
Q

What is the function of triceps brachii

A

extensor of elbow

GBE (48 decks)

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