Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Gross Anatomy II NYCC > Anterior Forearm (Anterior Antebrachium) > Flashcards

Anterior Forearm (Anterior Antebrachium) Flashcards

1
Q

cutaneous innervation

What nerve runs in the most superior lateral portion of the anterior forearm?

A

Posterior antebrachial cutaneous nerve (from radial nerve (C6, C7, C8))

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

cutaneous innervation

What nerve runs in the lateral portion of the anterior forearm?

A

Lateral antebrachial cutaneous nerve (C5, C6)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

cutaneous innervation

What nerve runs in the medial portion of the anterior forearm?

A

Medial antebrachial cutaneous nerve (C8, T1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

cutaneous innervation

What nerve runs in the lateral portion of the wrist?

A

Superficial branch of the radial nerve (C6)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

cutaneous innervation

Which nerve runs in the medial portion of the wrist and palm?

A

Dorsal cutaneous branch of ulnar nerve (C8)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which nerves run in flexors and pronators of the forearm?

A

Median nerve and anterior interosseous nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which nerves run in extensors and supinators of the forearm?

A

Posterior interosseous nerve, deep branch of radial nerve, radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The median nerve comes from the lateral and medial roots from the…

A

lateral and medial cords

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which muscles does the median nerve innervate?

A

Wrist flexors and thenar muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What branches come from the median nerve?

A

A deep branch: anterior interosseous nerve
A branch that supplies the hand: recurrent branches of the median nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What reflex is associated with the median nerve?

A

No reflex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How is the median nerve tested?

A

Performing wrist flexion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which muscles are in the superficial layer of the anterior forearm?

A

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which muscle is in the intermediate layer of the anterior forearm?

A

Flexor digitorum superficialis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which muscles are in the deep layer of the anterior forearm?

A

Flexor digitorum profundus
Pronator quadratus
Flexor pollicis longus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Pronator teres origin and insertion

A

Origin: humeral head: medial epicondyle
ulnar head: coronoid process
Insertion: midway along the lateral surface of the radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Innervation and spinal level of pronator teres

A

Median nerve (runs between humeral and ulnar heads) from C6 and mostly C7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Action of pronator teres

A

Pronation of the forearm: rotation of radius on ulna, turning the palm medially and backward

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The pronator teres is recruited when?

A

When force or speed is needed

20
Q

Origin and insertion of flexor carpi radialis

A

Origin: medial epicondyle
Insertion: base of the 2nd and 3rd metacarpal

21
Q

Innervation and spinal levels of flexor carpi radialis

A

Median nerve from C6, mostly C7

22
Q

Actions of flexor carpi radialis

A
  • Flexes 2nd carpometacarpal joint and the hand at wrist
  • Radial deviation (abduction) with extensor carpi radialis
  • Steadies the hand with flexor carpi ulnaris
23
Q

Origin and insertion of palmaris longus

A

Origin: medial epicondyle
Insertion: flexor retinaculum and the palmar aponeurosis

24
Q

Innervation and spinal levels of palmaris longus

A

Median nerve form C7, mostly C8

25
Q

Actions of palmaris longus

A

Tenses the palmar aponeurosis and weakly flexes the wrist

26
Q

Origin and insertion of flexor carpi ulnaris

A

Origin: medial epicondyle, medial aspect of the olecranon process, posterior border of the ulna
Insertion: pisiform, hamate, base of the 5th metacarpal

27
Q

Innervation and spinal levels of flexor carpi ulnaris

A

Ulnar nerve from C7, C8

28
Q

Actions of flexor carpi ulnaris

A
  • Flexes the 5th carpometacarpal joint
  • Adduction of the hand (ulnar deviation) with extensor carpi ulnaris
  • Steadies the wrist with the flexor carpi radialis
29
Q

Innervation and spinal levels of flexor digitorum superficialis

A

Median nerve from C7, mostly C8, T1

30
Q

Action of flexor digitorum superficialis

A

Flexes the proximal interphalangeal joints and the metacarpophalangeal joints

31
Q

Which muscle is considered the power grip muscle?

A

Flexor digitorum superficialis

32
Q

Origin and insertion of flexor digitorum profundus

A

Origin: upper 3/4ths of the anteromedial aspect of the ulna and ulnar half of the interosseous membrane
Interion: its 4 tendons pass through the tendons of FDS at the bases of the middle phalanges to insert at the bases of the distal phalanges of digits 2-5

33
Q

Innervation and spinal levels of flexor digitorum profundus

A

Anterior interosseous nerve and ulnar nerve from mostly C8, T1

34
Q

Action of flexor digitorum profundus

A

Flexes the distal interphalangeal joints (DIPs) after the PIPs are flexed by FDS. Weak wrist flexor

35
Q

Which muscle is the gentle grip flexor?

A

Flexor digitorum profundus

36
Q

When all fingers are flexed into a fist, extensor tendons…

A

relax

37
Q

When only 1 finger is flexed, which tendon remains active?

A

Antagonistic extensor tendon

38
Q

What are the long flexor tendons in the palm?

A

Flexor carpi ulnaris, flexor carpi radialis, and flexor digitorum profundus (FDP)

39
Q

Origins and insertion of flexor pollicis longus

A

Origin: radial head: anterior surface of the radius and interosseous membrane
humeral head: medial epicondyle and coronoid process of the ulna
Insertion: base of the distal phalanx of the thumb

40
Q

Innervation and spinal levels of flexor pollicis longus

A

Anterior interosseous nerve from C7, mostly C8, T1

41
Q

Action of flexor pollicis longus

A

Flexes the interphalangeal joint and the metacarpophalangeal joint of the thumb

42
Q

Origin and insertion of pronator quadratus

A

Origin: distal 1/4th of the anterior surface of the ulna
Insertion: distal 1/4th of the anterior surface of the radius

43
Q

Innervation and spinal levels of pronator quadratus

A

Anterior interosseous nerve from mostly C8, T1

44
Q

Action of pronator quadratus

A

Pronation of the forearm

45
Q

Which muscle is the principle pronator of the forearm?

A

Pronator quadratus

46
Q

What are the six entrapment sites of the median nerve?

A
  1. Medial intermuscular septa
  2. Pronator teres
  3. FDS/FDP tunnel
  4. Pronator quadratus - AIN
  5. Carpal tunnel
  6. FPB/APB

Gross Anatomy II NYCC (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions