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Gross Anatomy > Muscles of Arm > Flashcards

Muscles of Arm Flashcards

1
Q

Biceps Brachii Origin-2

A

Short Head: Coracoid process

Long Head: Supraglenoid tubercle of scapula

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2
Q

Biceps Brachii Insertion

A

Tuberosity of radius

Fascia of forearm via bicipital aponeurosis

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3
Q

Biceps Brachii Innervation

A

Musculocutaneous Nerve

C5, C6

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4
Q

Biceps Brachii Action-4

A
  • Supinates forearm
  • Flexes forearm
  • Flexes arm
  • Short head resists dislocation of shoulder
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5
Q

Brachialis Origin

A

Distal half of anterior surface of humerus

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6
Q

Brachialis Insertion-2

A
  • Coronoid process

- Tuberosity of ulna

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7
Q

Brachialis Innervation

A

Musculocutaneous Nerve

C5, C6

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8
Q

Brachialis Action

A

Flexes forearm

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9
Q

Coracobrachialis Origin

A

Coracoid process

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10
Q

Coracobrachialis Insertion

A

Middle third of medial surface of humerus

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11
Q

Coracobrachialis Innervation

A

Musculocutaneous Nerve

C5, C6, C7

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12
Q

Coracobrachialis Action-3

A

Helps flex arm
Helps adduct arm
Resists dislocation of shoulder

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13
Q

Triceps Brachii Origin-3

A

Long head: Infraglenoid tubercle of scapula

Lateral head: Posterior surface of humerus, superior to radial groove

Medial head: Posterior surface of humerus, inferior to radial groove

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14
Q

Triceps Brachii Insertion-2

A
  • Proximal end of olecranon of ulna

- Fascia of forearm

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15
Q

Triceps Brachii Innervation

A

Radial nerve

C6, C7, C8

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16
Q

Triceps Brachii Action-3

A
  • Extends forearm
  • Long head extends arm
  • Long head resists dislocation of humerus
17
Q

Anconeus Origin

A

Lateral epicondyle of humerus

18
Q

Anconeus Insertion-2

A
  • Lateral surface of olecranon

- Superior part of posterior surface of ulna

19
Q

Anconeus Innervation

A

Radial Nerve

C7, C8, T1

20
Q

Anconeus Action-3

A
  • Assists triceps in extending forearm
  • Stabilizes elbow joint
  • Abducts ulna during pronation

Gross Anatomy (22 decks)

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