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Arm muscle 2.0 Flashcards

(60 cards)

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1
Q

What is the origin of the Brachialis muscle?

A

Coronoid process of the ulna

The Brachialis muscle is primarily involved in flexing the forearm at the elbow.

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2
Q

What is the insertion point of the Brachialis?

A

Humerus

The Brachialis inserts on the humerus to facilitate elbow flexion.

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3
Q

What action does the Brachialis perform?

A

Flexes forearm at elbow

This muscle is crucial for bending the elbow joint.

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4
Q

What is the origin of the Coracobrachialis muscle?

A

Coracoid process of the scapula

This muscle originates from the scapula and plays a role in shoulder movements.

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5
Q

What are the actions of the Coracobrachialis muscle?

A
  • Flexes arm at shoulder
  • Adducts arm

The Coracobrachialis assists in moving the arm towards the body.

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6
Q

What is the origin of the Triceps brachii long head?

A

Infraglenoid tubercle of the scapula

The long head of Triceps brachii contributes to arm extension.

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7
Q

What is the insertion point of the Triceps brachii?

A

Olecranon process of the ulna

This insertion allows for effective extension of the forearm.

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8
Q

What action does the Triceps brachii perform?

A

Extends forearm at elbow

The Triceps brachii is the primary muscle responsible for extending the elbow.

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9
Q

What is the origin of the Pronator teres?

A

Medial epicondyle of the humerus

The Pronator teres originates from the humerus and aids in forearm rotation.

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10
Q

What action does the Pronator teres perform?

A

Pronates forearm

This muscle rotates the forearm so that the palm faces down.

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11
Q

What is the origin of the Flexor carpi radialis?

A

Medial epicondyle of the humerus

The Flexor carpi radialis also assists in wrist movements.

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12
Q

What are the actions of the Flexor carpi radialis?

A
  • Flexes hand at wrist
  • Abducts hand

It plays a key role in wrist flexion and lateral movement of the hand.

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13
Q

What is the insertion point of the Flexor carpi radialis?

A

2nd and 3rd metacarpals

This insertion allows the muscle to influence hand movement.

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14
Q
A
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15
Q

What is the origin of the Palmaris longus?

A

Medial epicondyle of the humerus

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16
Q

Where does the Palmaris longus insert?

A

Palmar aponeurosis

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17
Q

What action does the Palmaris longus perform?

A

Flexes hand at wrist

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18
Q

What is the origin of the Flexor carpi ulnaris?

A

Medial epicondyle of the humerus

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19
Q

Where does the Flexor carpi ulnaris insert?

A

Pisiform, Hamate, 5th metacarpal

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20
Q

What actions does the Flexor carpi ulnaris perform?

A

Flexes hand at wrist, Adducts hand

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21
Q

What is the origin of the Flexor digitorum superficialis?

A

Medial epicondyle of the humerus, Coronoid process of ulna, Shaft of radius

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22
Q

Where does the Flexor digitorum superficialis insert?

A

Middle phalanges of 2nd to 5th digit

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23
Q

What actions does the Flexor digitorum superficialis perform?

A

Flexes hand at wrist, Flexes proximal interphalangeal joints

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24
Q

What is the origin of the Flexor digitorum profundus?

A

Ulna, Interosseous membrane

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25
Where does the Flexor digitorum profundus insert?
Distal phalanges of 2nd to 5th digit
26
What action does the Flexor digitorum profundus perform?
Flexes distal interphalangeal joints
27
What is the origin of the Flexor pollicis longus?
Anterior radius, Interosseous membrane
28
Where does the Flexor pollicis longus insert?
Distal phalanx of pollex
29
What action does the Flexor pollicis longus perform?
Flexes 1st interphalangeal joints
30
What is the action of the pronator quadratus?
Pronates forearm ## Footnote The pronator quadratus is located in the anterior compartment of the forearm.
31
What is the origin of the brachioradialis?
Lateral supracondylar ridge of the humerus ## Footnote The brachioradialis is part of the posterior compartment of the forearm.
32
What is the insertion of the brachioradialis?
Styloid process of the radius ## Footnote This muscle flexes the forearm at the elbow.
33
What actions does the brachioradialis perform?
* Flexes forearm at elbow * Stabilizes elbow during flexion and extension ## Footnote The brachioradialis is key for elbow stability.
34
What is the origin of the extensor carpi radialis longus?
Lateral supracondylar ridge of the humerus ## Footnote This muscle is involved in extending and abducting the hand.
35
What is the action of the extensor carpi radialis longus?
* Extends hand at wrist * Abducts hand ## Footnote It is located in the posterior compartment of the forearm.
36
What is the origin of the extensor carpi radialis brevis?
Lateral epicondyle of the humerus ## Footnote This muscle also contributes to wrist movements.
37
What is the action of the extensor carpi radialis brevis?
* Extends hand at wrist * Abducts hand ## Footnote It works alongside the extensor carpi radialis longus.
38
What is the origin of the extensor digitorum?
Lateral epicondyle of the humerus ## Footnote This muscle is responsible for extending the fingers.
39
What are the actions of the extensor digitorum?
* Extends distal interphalangeal joints * Extends hand at wrist ## Footnote It acts on the 2nd to 5th digits.
40
Fill in the blank: The pronator quadratus inserts at the _______.
radius ## Footnote It is located distally and anteriorly.
41
Fill in the blank: The extensor carpi radialis longus inserts at the _______.
2nd metacarpal ## Footnote This muscle is involved in wrist extension.
42
True or False: The extensor digitorum only extends the proximal interphalangeal joints.
False ## Footnote It extends both distal interphalangeal joints and the hand at the wrist.
43
What is the origin of the extensor carpi ulnaris?
Lateral epicondyle of the humerus, posterior ulna ## Footnote The extensor carpi ulnaris is a muscle located in the posterior compartment of the forearm.
44
What is the insertion point of the extensor carpi ulnaris?
5th metacarpal ## Footnote This muscle contributes to wrist movement.
45
What actions does the extensor carpi ulnaris perform?
* Extends hand * Adducts hand * Supinates forearm ## Footnote These actions are essential for various hand movements.
46
What is the origin of the supinator muscle?
Lateral epicondyle of the humerus, proximal ulna ## Footnote The supinator muscle assists in the supination of the forearm.
47
What is the action of the supinator muscle?
Abducts pollex ## Footnote The supinator is crucial for thumb movement.
48
What is the origin of the abductor pollicis longus?
Posterior radius, posterior ulna, interosseus membrane ## Footnote This muscle plays a role in thumb abduction.
49
What is the insertion point of the abductor pollicis longus?
Trapezium, 1st metacarpal ## Footnote The abductor pollicis longus facilitates thumb movement.
50
What is the origin of the extensor pollicis brevis?
Posterior radius, posterior ulna, interosseus membrane ## Footnote This muscle is involved in thumb extension.
51
What is the insertion point of the extensor pollicis brevis?
Proximal phalanx of pollex ## Footnote It specifically extends the 1st metacarpal-phalangeal joint.
52
What is the origin of the extensor pollicis longus?
Posterior radius, posterior ulna, interosseus membrane ## Footnote This muscle is important for the extension of the thumb.
53
What is the insertion point of the extensor pollicis longus?
Distal phalanx of pollex ## Footnote It extends the 1st interphalangeal joint.
54
What is the origin of the Extensor indicis muscle?
Posterior ulna and interosseus membrane
55
What is the insertion point of the Extensor indicis?
Distal phalanx of 2nd digit
56
What is the action of the Extensor indicis?
Extends 2nd distal interphalangeal joint
57
What is the origin of the Extensor digiti minimi?
Lateral epicondyle of humerus
58
What is the insertion point of the Extensor digiti minimi?
Distal phalanx of 5th digit
59
What is the action of the Extensor digiti minimi?
Extends 5th distal interphalangeal joint
60
What muscle abducts the pollex?
Abductor pollicis

Muscles (6 decks)

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