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Anatomy > Brachium Muscles > Flashcards

Brachium Muscles Flashcards

1
Q

What is the MA of the Biceps Brachii?

A

Supination of the forearm (#1 function) and elbow flexion

Short head resists dislocation of the shoulder

Main contributor to elbow flexion when forearm is supinated

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2
Q

What is the PA of the Biceps Brachii?

A

Short Head: coracoid process
Long Head: supraglenoid tubercle & labrum

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3
Q

What is the DA of the Biceps Brachii?

A

Radial tuberosity and forearm fascia via bicipital aponeurosis

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4
Q

What is the N for the Biceps Brachii?

A

Musculocutaneous nerve (C5, C6, & C7)

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5
Q

What is the MA of the Brachialis?

A

Flexion of the elbow in all positions (humeroulnar joint)

Main contributor to elbow flexion when forearm is pronated

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6
Q

What is the PA of the Brachialis?

A

Distal anterior humerus

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7
Q

What is the DA of the Brachialis?

A

Ulnar tuberosity and coronoid process of ulna

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8
Q

What is the N for the Brachialis?

A

Musculocutaneous nerve (C5 & C6)

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9
Q

What is the MA of the Coracobrachialis?

A

Flexion & adduction of the shoulder (glenohumeral joint)

Resists dislocation of the shoulder

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10
Q

What is the PA of the Coracobrachialis?

A

Coracoid process

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11
Q

What is the DA of the Coracobrachialis?

A

Middle humerus

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12
Q

What is the N for the Coracobrachialis?

A

Musculocutaneous nerve (C5, C6, & C7)

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13
Q

What is the MA of the Brachoradialis?

A

Flexion of the elbow in mid-pronated position (thumb-up position) (humeroulnar joint)

Assists pronation and supination of the forearm when these movements are resisted/from end range (humeroradial joint)

Main contributor to elbow flexion when forearm is mid-pronated

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14
Q

What is the PA of the Brachoradialis?

A

Lateral supraepicondylar ridge of humerus

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15
Q

What is the DA of the Brachoradialis?

A

Distal lateral radius (proximal to styloid process)

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16
Q

What is the N for the Brachoradialis?

A

Radial nerve (C5, C6, & C7)

17
Q

What is the MA of the Triceps Brachii

A

Chief extensor of forearm/elbow

Long head resists dislocation of the humerus; especially important during adduction

18
Q

What is the PA of the Triceps Brachii?

A

Long Head: infraglenoid tubercle

Lateral Head: posterior humerus (superior to radial groove)

Medial Head: posterior humerus (inferior to radial groove)

19
Q

What is the DA of the Triceps Brachii?

A

Olecranon of ulna

20
Q

What is the N for the Triceps Brachii?

A

Radial nerve (C6, C7, & C8)

21
Q

What is the MA of the Anconeus?

A

Assists triceps in elbow extension

Stabilizes the elbow joint

May abduct ulna during pronation

22
Q

What is the PA of the Anconeus?

A

Lateral epicondyle of humerus

23
Q

What is the DA of the Anconeus?

A

Lateral olecranon

24
Q

What is the N for the Anconeus?

A

Radial nerve (C7, C8, & T1)

Anatomy (29 decks)

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