Muscles Of Arm Flashcards

0
Q

Biceps brachii insertion

A

Tuberosity of radius and fascia of forearm via bicipital aponeurosis

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1
Q

Biceps brachii origin

A

Short head: tip of coracoid process of scapula

Long head: supraglenoid tubercle of scapula

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2
Q

Biceps brachii innervation

A

Musculocutaneous nerve C5, C6

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3
Q

Biceps brachii actions

A

Supinates forearm and when it is supinator flexes elbow joint; flexes shoulder joint; short head resists dislocation of shoulder

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4
Q

Brachialis origin

A

Distal half of anterior surface of humerus

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5
Q

Brachialis insertion

A

Coronoid process and tuberosity of ulna

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6
Q

Brachialis innervation

A

Musculocutaneous nerve C5, C6

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7
Q

Brachialis actions

A

Flexes elbow joint in all position

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8
Q

Coracobrachialis origin

A

Tip of coracoid process of scapula

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9
Q

Coracobrachialis insertion

A

Middle third of medial surface of humerus

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10
Q

Coracobrachialis innervation

A

Musculocutaneous nerve C5, C6, C7

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11
Q

Coracobrachialis actions

A

Helps flex and adduct shoulder joint; resists dislocation of shoulder

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12
Q

Triceps brachii origin

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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13
Q

Triceps brachii insertion

A

Proximal end of olecranon of ulna and fascia of forearm

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14
Q

Triceps brachii innervation

A

Radial nerve C6, C7, C8

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15
Q

Triceps brachii actions

A

Chief extensor of elbow joint; long head extends shoulder joint and resists dislocation of humerus

16
Q

Anconeus origin

A

Lateral epicondyle of humerus

17
Q

Anconeus insertion

A

Lateral surface of olecranon and superior part of posterior surface of ulna

18
Q

Anconeus innervation

A

Radial nerve C7, C8, T1

19
Q

Anconeus actions

A

Assists triceps in extending elbow joint; stabilizes elbow joint; abducts ulna during pronation