Lab - Muscle Flashcards by Kennedy Nora Claud | Brainscape

Q

Raises Eyebrows

A

Frontalis

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Q

Draws scalp posteriorly

A

Occipitalis

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Q

Closes each eye

A

orbicularis oculi

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Q

Puckers mouth

A

orbicularis oris

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Q

Pulls corners of mouth

A

zygomaticus major

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Q

elevates upper lip

A

zygomaticus minor

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Q

depresses lower lip

A

platysma

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Q

tenses neck skin

A

platysma

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Q

depresses mandible

A

platysma

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Q

protracts mandible

A

masseter

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Q

rotation of head

A

sternocleidomastoid

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Q

flexion of head

A

sternocleidomastoid

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Q

Flexes vertebral column

A

rectus abdominus
external oblique
internal oblique

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Q

Lateral flexion of vertebral column

A

Erector spinae

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Q

Three parts of erector spinae

A

iliocostalis
longissimus
spinalis

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Q

compresses abdomen

A

rectus abdominus
external oblique
internal oblique
transverse abdominis

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Q

Rotation of trunk

A

external oblique

- internal oblique

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Q

Normal inspiration

A

diaphragm

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Q

Forced inspiration

A

external intercostals

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Q

Elevates scapula

A

trapezius
levator scapulae
rhomboid major
rhomboid minor

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Q

inferiorly rotates scapula

A

rhomboid major

- rhomboid minor

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Q

elevates clavicle

A

trapezius

Q

elevates mandible

A

temporalis

- masseter

Q

retracts mandible

A

temporalis

- masseter

Q

extension of head

A

sternocleidomastoid

Q

forced expiration

A

internal intercostals

Q

depresses scapula

A

pectoralis minor

- trapezius

Q

abducts scapula

A

serratus anterior

Q

superiorly rotates scapula

A

serratus anterior

Q

flexes arm

A

pectoralis major
anterior deltoid
biceps brachii

Q

adducts arm

A

pectoralis major
lattissimus dorsi
infraspinatus
teres major

Q

laterally rotates arm

A

posterior deltoid
infraspinatus
teres minor

Q

flexes forearm

A

biceps brachii
brachialis
brachioradialis
pronator teres

Q

pronates forearm

A

pronator teres

Q

Flexes hand

A

flexor carpi radialis
flexor carpi ulnaris
palmaris longus
flexor digitorum superficialis
flexor digitorum profundus

Q

abducts hand

A

flexor carpi radialis
extensor carpi radialis longus
extensor carpi radialis brevis
abductor pollicis longus
extensor pollicis brevis

Q

extends arm

A

lattissimus dorsi
posterior deltoid
teres major
teres minor
triceps brachii

Q

abducts arm

A

middle deltoid

- supraspinatus

Q

medially rotates arm

A

pectoralis major
lattissimus dorsi
anterior deltoid
teres major
subscapularis

Q

extends forearm

A

triceps brachii

Q

supinates forearm

A

biceps brachii

Q

extends hand

A

extensor digitorum
extensor carpi ulnaris
extensor carpi radialis longus
extensor carpi radialis brevis
extensor digiti minimi

Q

adducts hand

A

extensor carpi ulnaris

- flexor carpi ulnaris

Q

Flexes digits

A

flexor digitorum superficialis

- flexor digitorum profundus

Q

abducts thumb

A

abductor pollicis longus

Q

extends thumb

A

abductor pollicis longus

- extensor pollicis brevis

Q

extends digits

A

extensor digitorum

- extensor digiti minimi

Q

Action potentials arrive at the _____________ of the motor neuron

A

synaptic end bulb

Q

Synaptic vesicles containing neurotransmitter _______ undergo exocytosis

A

ach

Q

ACh is released into the __________

A

synaptic cleft

Q

ach binds to ___________ on the motor end plate

A

motor end plate

Q

ACh receptors open and allow _____ to enter the muscle fiber

A

Na+

Q

ACh is broken down by _______________ into acetate and choline

A

acetylcholine esterase