Brainscape's Knowledge GenomeTM

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


See full index

SHB - Exam 1 > Forearm > Flashcards

Forearm Flashcards

1
Q

What fascia envelopes the forearm?

A

Antebrachial fascia

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

Posterior and lateral muscles are innervated by what nerve? Anterior and Medial?

A
  1. Radial nerve

2. Median Nerve

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

What are the different actions of the wrist - condyloid joint?(5)

A
  1. Flexion
  2. Extension
  3. Abduction
  4. Adduction
  5. Circumduction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Supination and pronation occurs at what joint?

A

Radioulnar

  • extension and flexion at the elbow
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The metacarpals are what kind of joint?

A

Condyloid - circumduction occurs

interphalangeal = hinge joint –> flexion/extension

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

What are the two main supinators?

A

Biceps Brachii and Supinator muscle

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

What are the actions, innervations, and originate of the anterior compartment of the forearm?

A

Flexion and Median Nerve (all EXCEPT ulnar half of flexor digitorum profundus and flexor carpi ulnaris – ulnar N.)

Originate at medial epicondyle (via common flexor tendon)

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

What two muscles rotate the radius on the ulna from the anterior compartment of the forearm?

A
  1. Pronator teres (assists elbow flexion as well)

2. Pronator Quadratus

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

What muscles flex the hand at the wrist and insert onto palmar aponeurosis/metacarpals?

A
  1. Palmaris Longus - tense the palm, flex wrist
  2. Flexor Carpi Radialis - ABDuction, flex wrist
  3. Flexor Carpi Ulnaris - ADDuction, flex wrist
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What muscles flex the hand at the wrist and DIGITS and insert onto phalanges?

A
  1. Flexor digitorum superficialis - flex MCP, PIP
  2. Flexor Digitorum Profundus - flex DIP*
  3. Flexor Pollicis Longus - flex thumb
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the actions, innervations, and origin of the POSTERIOR compartment of the forearm?

A

A: Extension, rotate radius on ulna (supinator)
N: Radial Nerve*
Origin: Common extensor attachment of LATERAL epicondyle

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

What muscle rotates the radius on the ulna from the POSTERIOR compartment of the forearm?

A

Supinator

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

What muscles EXTEND the hand at the wrist and insert onto metacarpals 2,3, or 5?

A
  1. Extensor Carpi Radialis Longus - abduct*
  2. Extensor Carpi Radialis Brevis - abduct
  3. Extensor Carpi Ulnaris - ADDucts

*all extend

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

What muscles EXTEND the hand at the wrist and DIGITS and insert onto phalanges? Where do they insert?

A

Insert onto the extensor expansion hood

  1. extensor digitorum – 2 to 5
  2. extensor indicis - extend digit 2
  3. extensor digiti minimi - extends digit 5 (pinky)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What muscles EXTEND the thumb? Where do they insert?

A
  1. Abductor Pollicis Longus - base of 1st Metacarpal –> extend and abduct
  2. Extensor Pollicis Brevis - base of proximal phalanx (extend PIP)
  3. Extensor Pollicis Longus - base of distal phalanx (extends the DIP)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What muscle is also part of the posterior compartment and serves to flex the elbow and guide us to find the extensor muscles?

A

Brachioradialis!

  • flexes the elbow when pronated
  • *RADIAL NERVE**
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What forms the snuff box?

A
  1. Abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus
  2. Contains Radial ARTERY
  3. Superficial Radial NERVE
  4. Scaphoid bone
18
Q

What nerve runs between flexor digitorum superficial is and flexor digitorum profundus?

A

Median nerve

19
Q

All the triceps insert onto_________

A

Olecrenon Fossa (back of arm)

20
Q

What nerve lies between the medial and lateral heads of the triceps?

A

Radial Nerve

21
Q

What nerve travels by the funny bone?

A

Ulnar Nerve

22
Q

Once the radial nerve hits the supinator it is called:

A

Posterior Interosseus Nerve

Median is the Anterior Interosseus Nerve

23
Q

Muscles that attach to the Radius always abduct or adduct?

A

Abduct

24
Q

What nerve supplies the cutaneous innervations for the lateral aspect of the forearm?

A

Lateral Antebrachial Cutaneous (Musculocutaneous)

Medial Antebrachial Cutaneous is the Medial aspect of the arm (arises from the medial chord of the brachial plexus)

25
Q

Pronator Teres Muscle

A

O: Medial Epicondyle
I: Radius
A: Pronation of forearm, assist with elbow flexion
N: Median Nerve

26
Q

Flexor Carpi Radialis

A 
O: Medial Epicondyle
I: base of 2nd metacarpal
A: flexion and ABDuction wrist
N: Median N.
B: Radial Artery
27
Q

Flexor Carpi Ulnaris

A

O: medial epicondyle
I: pisiform bone, hook of hamate, 5th metacarpal
A: Flexion and ADDuction hand at wrist
N: Ulnar N.

28
Q

Palmaris Longus

A

O: Medial Epicondyle
I: Flexor Retinaculum and Palmar Aponeurosis
A: Flexion of wrist, tenses palm*
N: Medial N.

  • not everyone has this
29
Q

Flexor Digitorum Superficialis

A

O: Medial Epicondyle
I: Bodies of middle phalanges (PIP) of medial 4 digits
A: Flexion of PIP and MCP, (assist) flex hand at wrist
N: Median N.

30
Q

Flexor Digitorum Profundus

A

O: Medial Epicondyle
I: DIP of medial 4 digits
A: Flexion of DIP, assist flexion hand at wrist
N: Median N. , Ulnar N for the Ulnar 1/2

31
Q

Pronator Quadratus

A

O: Distal 1/4 of anterior Ulna
I: Distal 1/4 of anterior Radius
A: Pronation of forearm
N: Median N. (anterior interosseus)

32
Q

Flexor Pollicis Longus

A

O: Surface of radius and interosseus membrane
I: DIP of thumb
A: Flexes phalanges of thumb
N: Median N.

33
Q

Extensor Carpi Radialis Longus

A

O: lateral supracondylar ridge of humerus
I: base of 2nd metacarpal
A: Extends and ABDucts hand at wrist
N: Radial

34
Q

Extensor Carpi Radialis Brevis

A

O: lateral epicondyle of humerus
I: base of 3rd metacarpal
A: Extends and ABDucts hand at wrist
N: Radial N.

35
Q

Brachioradialis

A

O: 2/3 of lateral supracondyle ridge of humerus
I: Radius
A: weak flexion of forearm when PRONATED*
N: Radial N.

36
Q

Extensor Carpi Ulnaris

A

O: Lateral epicondyle of humerus
I: Dorsal base of 5th Metacarpal
A: Extension and ADDuction
N: Radial N. ** (posterior interosseus, not ulnar)

37
Q

Extensor Digiti Minimi

A

O: Lateral Epicondyle
I: Extensor Expansion Hood of 5th Metacarpal*
A: Extension of 5th digit
N: Radial Nerve (posterior I = deep radial)

38
Q

Extensor Digitorum

A

O: Lateral Epicondyle
I: extensor expansion of medial 4 digits
A: extension of medial 4 digits (assist in wrist extension)
N: Radial N. (posterior interosseus)

39
Q

Abductor Pollicis Longus

A

O: posterior surface of ulna,radius, and interosseus membrane
I: base of 1st METACARPAL
A: abduction/ extension of the thumb and carpometacarpal joint
N: Radial N. (posterior interosseus)

40
Q

Extensor Pollicis Brevis

A

O: Posterior surface of radius + interosseus membrane
I: base of PROXIMAL Phalanx of thumb
A: extension of PIP of thumb at carpometacarpal joint
N: Radial N. (posterior interosseus)

41
Q

Extensor Pollicis Longus

A

O: Posterior surface of middle third of ulna, interosseus membrane
I: base of DISTAL phalanx of thumb
A: Extension of Distal phalanx
N: Radial N. (posterior interosseus)

42
Q

Extensor Indicis

A

O: Posterior surface of ulna, interosseus membrane (close to extensor pollicis longus)
I: Extensor Expansion of 2nd digit (pointer finger)
A: Extension of 2nd digit, assist extension of hand at wrist
N: Radial Nerve (posterior interosseus)

SHB - Exam 1 (14 decks)

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