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ANA 201 > Muscles Of Upper Limb 3 > Flashcards

Muscles Of Upper Limb 3 Flashcards

1
Q

The muscles in the anterior compartment of the forearm are organised into three layers

——- of _ muscles
——— of _ muscles
———of _ muscles

A

4 superficial

  • 1 intermediate
  • 3 deep
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2
Q

The anterior forearm muscle group is associated with ____ action of the forearm, ____ of the wrist and _____ of the fingers.

A

pronation

flexion

flexion

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3
Q

The anterior forearm muscle group are mostly innervated by the _____ nerve , and they recieve arterial supply from the ____ artery and ____ artery

A

median

ulnar

Radial

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4
Q

Time to list the muscle of anterior forearm

Superficial:
_____, _____, _____, _____

Intermediate: ________

Deep: ______ ,______, and_____

A

flexor carpi ulnaris

flexor carpi radialis

palmaris longus

pronator teres.

flexor digitorum superficialis.

flexor pollicis longus; flexor digitorum profundus; pronator quadratus.

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5
Q

The superficial muscles in the anterior compartment all originate from a common tendon, which arises from the ______ of the ____

A

medial epicondyle

humerus.

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6
Q

FLEXOR CARPI ULNARIS

ORIGIN: ______ and ____

INSERTION: ______ bone

ACTION: (flexion or extension?) and (adduction or abduction ?) at ____

INNERVATION: ____ nerve

A

medial epicondyle

ulna

pisiform carpal

flexion

adduction

wrist

ulnar

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7
Q

FLEXOR CARPI RADIALIS

ORIGIN: ______

INSERTION: ____ of ____ — and —

ACTION: (flexion or extension?) and (adduction or abduction?) at the wrist

INNERVATION : ____ nerve

A

medial epicondyle

base; metacarpals; 2 and 3

flexion

abduction

median

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8
Q

PALMARIS LONGUS
-absent in about __% of the population

ORIGIN: _____

INSERTION: _____

ACTION: (flexion or extension ?) at the wrist

INNERVATION : _____ nerve

A

15

medial epicondyle

flexor retinaculum

flexion

median

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9
Q

PRONATOR TERES

ORIGIN:
_______
_____ of ulna

INSERTION: _____ of ____

ACTION: ____ of the forearm

INNERVATION : ____ nerve

A

medial epicondyle

coronoid process

lateral mid shaft; radius

pronation

median

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10
Q

FLEXOR DIGITORUM SUPERFICIALIS

ORIGIN:

____
____

INSERTION: _____ phalanx of the four digits

ACTION: (flexion or extension?) of fingers (at MP and proximal IP joints)and wrist

INNERVATION : ______ nerve

A

medial epicondyle

Radius

middle

Flexion

median

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11
Q

FLXEOR DIGITORUM PROFUNDUS

ORIGIN:
_____
_____

INSERTION: ____ phalanx of the four digits

ACTION: (flexes or extends?) ____ IP joints and the wrist

INNERVATION :medial half is by ___ nerve; lateral half is by ______ nerve

A

ulna

interosseous membrane

distal

flexes; distal

ulnar

median

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12
Q

FLEXOR POLICIS LONGUS

ORIGIN: _____ and ______

INSERTION: ____ phalanx of ______

ACTION: (flexes or extends?) IP and MP joint of thumb

INNERVATION : ____ nerve

A

radius

interosseous membrane

distal; thumb

flexes

median

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13
Q

PRONATOR QUADRATUS

ORIGIN:
_____ surface of ___

INSERTION:
_____ surface of _____

ACTION: _____ of forearm

INNERVATION : _____ nerve

A

anterior

ulna

anterior; radius

pronation

median

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14
Q

The muscles in the posterior compartment of the forearm are commonly known as the ____ muscles.

The general function of these muscles is to produce _____ at the ____ and ___.

They are all innervated by the _____ nerve.

A

extensor

extension

wrist and fingers

radial

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15
Q

The superficial layer of the posterior forearm contains ___ muscles. Four of these muscles – extensor _____, extensor ____, extensor ____ and extensor _____ share a common tendinous origin at the ____

A

seven

carpi radialis brevis

digitorum

carpi ulnaris

digiti minimi

lateral epicondyle

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16
Q

EXTENSOR CARPI ULNARIS

ORIGIN: ______

INSERTION : ____ of _____

ACTION : (flexion or extension?) and (adduction or abduction?) at wrist

INNERVATION : _____ nerve(deep branch)

A

lateral epicondyle

base; metcarpal 5

extension

adduction

radial

17
Q

EXTENSOR CARPI RADIALIS LONGUS AND BREVIS

ORIGIN:
ECRL- _______
ECRB- _______

INSERTION : ______ — and —

ACTION : (flexes or extends?) and (adducts or abducts?) at the wrist

INNERVATION: ____ nerve

A

supracondylar ridge

lateral epicondyle

metacarpals 2 and 3

extends

abducts

18
Q

EXTENSOR DIGITORUM

ORIGIN: _______

INSERTION: ______ of the four digits

ACTION : (flexes or extends?) at MP and IP joints

INNERVATION: ____ nerve( deep branch)

A

lateral epicondyle

extensor hood

extends

radial

19
Q

EXTENSOR DIGITI MINIMI

ORIGIN: _____

INSERTION : ______ of pinky

ACTION : (flexes or extends?) pinky

INNERVATION: ______ nerve( deep branch

A

lateral epicondyle

extensor hood

extends

radial

20
Q

BRACHIORADIALIS

ORIGIN: ____ aspect of ____

INSERTION :____ end of ____, just before it’s _____

ACTION : (flexes or extends ?) at the elbow

INNERVATION: ___ nerve

A

proximal

lateral supracondylar ridge

distal

radius

styloid process

flexes

radial

21
Q

ANCONEUS
-blends with the fiber of _____

ORIGIN: _____

INSERTION : _____ part of _____

ACTION :
(flexes or extends?) and stabilizes ____ joint

(Adducts or abducts?) the ulna during _____ of forearm

INNERVATION; ___ nerve

A

triceps brachii

lateral epicondyle

posterolateral; olecranon

extends; elbow

abducts

pronation

radial

22
Q

Lateral Epicondylitis

Lateral epicondylitis (or _____) refers to inflammation of the ___ of the lateral epicondyle. The peak age of onset is __ to ___ years old.

It is caused by repeated use of the _____ muscles, which strains their common tendinous attachment to the lateral epicondyle.

A

tennis elbow

periosteum

40-50

superficial extensor

23
Q

There are ___ muscles in the deep compartment of the posterior forearm

A

five

24
Q

List the muscles in the deep posterior compartment of the forearm

A

the supinator, abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus and extensor indicis.

25
Q

The supinator lies in the __ of the cubital fossa.

It has two heads, which the ___ branch of the ____ nerve passes between.

A

floor

deep

radial

26
Q

SUPINATOR
-__ heads

ORIGIN:
_____
___ surface of ___

INSERTION : ___ surface of ___

ACTION : ____ the forearm

INNERVATION : ___ nerve ( deep branch)

A

2

lateral epicondyle

post; ulna

post; radius

supinates

radial

27
Q

ABDUCTOR POLLICIS LONGUS

ORIGIN: _____ surface and interosseous membrane of ___ and ___

INSERTION : (medial or lateral?) (apex or base ?) of ____

ACTION : ____ the thumb

INNERVATION : ____ nerve (—B)

A

posterior; ulna and radius

Lateral

Base

metacarpal 1

abducts

radial; PI

28
Q

EXTENSOR POLLICIS LONGUS

ORIGIN: ____ surface and interosseous membrane of ____

INSERTION : —— phalanx of the thumb

ACTION : CP, metarcarpoohalngeal, and IP joints

INNERVATION : ___ nerve(PIB)

A

posterior

ulna

distal

radial

29
Q

EXTENSOR POLLICIS BREVIS

ORIGIN: _____ surface and interosseous membrane of ___

INSERTION : ____ phalanx of the thumb

ACTION : MP and carpometcarpal joints

INNERVATION : ____ nerve (PIB)

A

posterior

radius

proximal

radial

30
Q

EXTENSOR INDICIS

ORIGIN: ____ surface and interosseous membrane of ____, (proximal or distal?) to extensor policis longus

INSERTION : _____ of index finger

ACTION : (flexes or extends?) the index finger

INNERVATION : ___ nerve (PIB)

A

posterior

ulna

distal

extensor hood

extends

radial

31
Q

Wrist drop is a sign of ___ nerve injury that has occurred ___ to the elbow.

A

radial

proximal

32
Q

There are two common characteristic sites of damage of radial nerve :

Axilla – injured via _______s or fractures of the ____

Radial groove of the humerus – injured via a _____

A

humeral dislocation

proximal humerus.

humeral shaft fracture.

33
Q

The radial nerve innervates all muscles in the extensor compartment of the forearm.
T/F

A

T

34
Q

In the event of a radial nerve lesion, these muscles are ____. The muscles that flex the wrist are innervated by the ____ nerve, and thus are unaffected. The tone of the flexor muscles produces unopposed flexion at the wrist joint – wrist drop.

A

paralysed

median

ANA 201 (34 decks)

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