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Musculoskeletal (Milly's) > Anterior Forarm Muscles > Flashcards

Anterior Forarm Muscles Flashcards

1
Q

How many muscles are in the superior compartment of the anterior forearm and where do they all originate from?

A

4 (flexor carpi ulnaris, palmaris longus, flexor carpi radialis and pronator teres)

Common tendon arising from the medial epicondyle of the humerus

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2
Q

Name the 4 superficial muscles of the anterior compartment of the forearm

A

Flexor carpi ulnaris
Palmaris Longus
Flexor carpi radialis
Pronator teres

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3
Q

What are the attachments of the flexor carpi ulnaris muscle of the forearm?

A

2 orgins-the medial epicondyle and ulnar (long origin)

Attaches to the pisiform carpal bone

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4
Q

What are the actions of the flexor carpi ulnaris muscle in the forearm?

A

Flexion and adduction at the wrist

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5
Q

What nerve innervated the flexor carpi ulnaris muscle of the forearm?

A

Ulnar nerve

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6
Q

What is special about the palmaris longus?

A

It is absent in about 15% of the population

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7
Q

What are the attachments of the palmaris longus muscle of the forearm?

A

Originates form the medial epicondyle

Attaches to the flexor retinaculum of the wrist

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8
Q

What is the action of the palmaris longus muscle of the forearm?

A

Flexion at the wrist

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9
Q

What nerve innervates the palmaris longus muscle of the forearm?

A

Median nerve (C7)

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10
Q

What are the attachments of the flexor carpi radialis muscle of the forearm?

A

Origantes from the medial epicondyle

Attaches to the base of metacarpals 2 and 3

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11
Q

What is the action of the flexor carpi radialis muscle of the forearm?

A

Flexion and abduction at the wrist

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12
Q

What nerve innervates the flexor carpi radialis muscle of the forearm?

A

Median nerve

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13
Q

What is special about the pronator teres muscle of the forearm?

A

The lateral border of it forms the medial border of the cubital fossa

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14
Q

What are the attachments of the pronator teres muscle of the forearm?

A

2 origins: medial epicondyle and coronoid process of ulna

Attaches laterally to the mid-shaft of the radius

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15
Q

What is the action of the pronator teres muscle of the forearm?

A

Pronation of the forearm

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16
Q

What nerve innervates the pronator teres muscle of the forearm?

A

Median nerve

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17
Q

What muscle is the only intermediate muscle found in the forearm?

A

Flexor digitorum superficialis

*(can sometimes be classed as a superficial muscle)

18
Q

What two structures run between the heads of the flexor digitorum superficialis muscle of the forearm and travel posteriorly?

A

The median nerve and ulnar artery

19
Q

What are the attachments of the flexor digitorum superficialis muscle of the forearm?

A

2 heads- one from medial epicondyle of humerus and one from radius

Muscle splits into 4 tendons at wrist and each attach to one of the middle phalanges of the four fingers

20
Q

What is the action of the flexor digitorum superficialis muscle of the forearm?

A

Flexes the metacarpophalangeal joint and proximal interphalangeal joints at the 4 fingers
And flexes at the wrist

21
Q

What nerve innervates the flexor digitorum superficialis muscle of the forearm?

A

Median nerve

22
Q

How many muscles are found in the deep anterior section of the forearm? Name them

A

3

Flexor digitorum profundus, flexor pollicis longus and pronator quadratus

23
Q

What are the attachments of the flexor digitorum profundus muscle of the forearm?

A

Originates from the ulna and associate interosseous membrane

Splits into 4 tendons at wrist, which each attach to one of the 4 distal phalanges of the four fingers

24
Q

What is the action of the flexor digitorum profundus muscle of the forearm?

A

Flex distal interphalangeal joints of fingers (only muscle that can do so), also flexes at metacarpophalangeal joints and at wrist

25
Q

What nerve innervates the flexor digitorum profundus muscle of the forearm?

A

Medial half (acting on the little and ring fingers) = ulnar nerve

Lateral half (middle and index fingers)= (anterior interosseous branch of the) median nerve

26
Q

Where does the flexor pollicis longus lie in relations to the flexor digitorum profundus of the forearm?

A

Laterally

27
Q

What are the attachments of the flexor pollicis longus of the forearm?

A

Originates from the anterior surface of the radius and surrounding interosseous membrane

Attaches to the base of the distal phalanx of the thumb

28
Q

What is the action of the flexor pollicis longus of the forearm?

A

Flexes the interphalangeal join and metacarpophalangeal joint of the thumb

29
Q

What nerve innervates the flexor pollicis longus of the forearm?

A

Median nerve (anterior interosseous branch)

30
Q

Where is the pronator quadratus found in relation to the flexor digitorum profundus and flexor pollicis longus? What does it look like?

A

Square shaped muscle lying deep the the tendons of the flexor digitorum profundus and flexor pollicis longus

31
Q

What are the attachments of the pronator quadratus muscle of the forearm?

A

Origninates from the anterior surface of the ulna

Attaches to the anterior surface of the radius

32
Q

What is the action of the pronator quadratus muscle of the forearm?

A

Pronates the forearm

33
Q

What nerve innervates the pronator quadratus muscle of the forearm?

A

Median nerve (anterior interosseous branch)

34
Q

What is the blood supply of the pronator teres?

A

Ulnar artery/ anterior ulnar recurrent artery

35
Q

What is the blood supply for the flexor carpi radialis?

A

Ulnar artery

36
Q

What is the blood supply for the palmaris longus?

A

Ulnar artery

37
Q

What is the blood supply for the flexor carpi ulnaris?

A

Ulnar artery

38
Q

What is the blood supply for the flexor digitorum superficialis?

A

Ulnar artery

39
Q

What is the blood supply for flexor digitorum profundas?

A

Ulnar artery and anterior interosseous artery

40
Q

What is the blood supply for the flexor pollicis longus?

A

Anterior interosseous artery

41
Q

What is the blood supply for pronator quadratus?

A

Anterior interosseous artery

Musculoskeletal (Milly's) (28 decks)

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