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Undergrad Anatomy > Muscles: Upper Limb > Flashcards

Muscles: Upper Limb Flashcards

1
Q

Extensor Capri Radialis Longus:

-Action

A

Wrist extension and abduction

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2
Q

Extensor Carpi Radialis Brevis:

-Origin, Insertion & Action

A

Origin: Lateral epicondyle of the humerus

Insertion: Dorsum of the third metacarpal bone

Action: Wrist extension and adduction

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3
Q

Extensor Carpi Ulnaris:

-Origin, Insertion and Action

A

Origin: Lateral epicondyle of the humerus

Insertion: Medial side of the base of the 5th metacarpal

Action: Wrist extension and adduction

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4
Q

Extensor Digitorum:

-Origin, Insertion and Action

A

Origin: Lateral epicondyle of the humerus

Insertion: Extensor expansion of digits 2-5

Action: Extension of the digits

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5
Q

Extensor Digiti Minimi:

-Origin, Insertion and Action

A

Origin: Lateral epicondyle of the humerus

Insertion: Joins the extensor digitorum tendon to the 5th digit and inserts into the extensor expansion

Action: Extension of digit 5

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6
Q

Extensor Retinaculum:

-Action

A

Wrist extension and restrains tendons

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7
Q

Extensor Pollicis Longus

-Action

A

Extension of the digits of the hand

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8
Q

Extensor Pollicis Brevis

-Action

A

Extension of the digits of the hand

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9
Q

Extensor Indicis

-Action

A

Extension of the digits of the hand

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10
Q

Adductor Pollicis Longus

-Action

A

Adduction of digit 1 (Thumb)

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11
Q

Flexor Carpi Radialis

-Action

A

Flexes and abducts the wrist

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12
Q

Flexor Carpi Ulnaris

A

Flexes and abducts the wrist

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13
Q

Palmaris Longus

A

Weak wrist flexor

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14
Q

Flexor Digitorum Superficialis:

-Origin, Insertion and Action

A

Origin:
Humeroulnar Head: Common flexor tendon

Radial Head: Middle 1/3 of the radius

Insertion: Bases of the distal phalanges of digits 2-5

Action: Flexes wrist, MCP and PIP joints

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15
Q

Flexor Digitorum Profundus:

-Insertion, Origin and Action

A

Origin: Posterior border of the ulna, proximal 2/3’s of the medial border of the ulna and the interosseous border

Insertion: Bases of the distal phalanges of digits 2-5

Action: Flexes distal DIP and MCP joints, and the wrist

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16
Q

Flexor Pollicis Longus:

-Action

A

Flexes the digits of the hand

17
Q

Flexor Retinaculum:

-Action

A

Restrains tendons

18
Q

Pronator Quadratus:

-Action

A

Pronation of the arm

19
Q

Pronator Teres:

-Action

A

Pronation of the arm

20
Q

Supinator:

-Action

A

Supination of the arm

21
Q

Biceps Brachii

-Origin, Insertion and Action

A

Origin:
Short Head: Tip of the caracoled process of the scapula

Long Head: Supraglenoid tubercle of the scapula

Insertion: Radial tuberosity

Action:

  • Elbow and shoulder flexion
  • Shoulder supination*
22
Q

Triceps Brachii:

-Origin, Insertion and Action

A

Origin:
Long Head: Infraglenoid tubercle of the scapula

Lateral Head: Posterolateral humerus and lateral inter-muscular septum

Medial Head: Posteromedial surface of the inferior 1/2 of the humerus

Insertion: Olecranon Process

Action: Elbow Extension

23
Q

Brachioradialis:

-Origin, Insertion and Action

A

Origin: Upper 2/3’s of the lateral supracondylar ridge of the humerus

Insertion: Lateral side of the base of the styloid process of the radius

Action: Elbow Flexion

24
Q

Coracobrachialis

-Origin, Insertion and Action

A

Origin: Coracoid process of the scapula

Insertion: Medial side of the humerus at the mid-shaft

Action: Adduction and flexion of the shoulder

25
Q

Brachialis:

-Action

A

Elbow flexion

26
Q

Anconeus:

A

Origin: Posterior sid elf the lateral epicondyle of the humerus

Insertion: Olecranon of the ulna

Action: Elbow extension

27
Q

Deltoid:

-Origin, Insertion and Action:

A

Origin: Lateral 1/3 of the clavicle, acromion and the lower lip of the crest of the spine of the scapula

Insertion: Deltoid tuberosity

Action:

  • Abduction
  • Flexion
  • Extension
  • Medial and lateral rotation of the shoulder

Undergrad Anatomy (21 decks)

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