lab practical Flashcards by Adrienne carter

Q

Orbicularis oris

A

closes lips, kissing and whistling muscle

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Q

Orbicularis oculi

A

closes eye

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Q

frontalis

A

raises eyebrows

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Q

masseter

A

prime mover of jaw closure

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Q

temporalis

A

closes jaw

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Q

platysma

A

tenses skin , depresses mandible

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Q

Zygomaticus

A

turns up the lateral portions of the mouth -smile

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Q

Sternocleidomastoid

A

together:flexes head
Apart: rotates head to opposite shoulder

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Q

diaphragm

A

expands thoracic cavity (inspiration)

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Q

External Intercostals

A

expands thoracic cavity (inspiration)

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Q

Internal Intercostals

A

Internal intercostals compresses thoracic cavity (forced expiration)

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Q

rectus abdominus

A

Flex and rotate lumbar region

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Q

external oblique

A

trunk rotation

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Q

internal oblique

A

trunk rotation

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Q

Transverse abdominus

A

increase intraabdominal pressure

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Q

erector spinea

A

extends back

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Q

trapezius

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A

stabilizes scapula (raise, retract & rotate too)

Q

rhomboids

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A

Stabilize scapula, adducts scapula

Q

latissimus dorsi

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A

extends and adducts shoulder joint

Q

pectoralis major

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A

Prime mover of arm flexion

Q

pectoralis minor

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A

Stabilizes pectoral girdle

Q

serratus anterior

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A

“Boxer’s muscle”

Q

brachialis

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A

major forearm flexor

Q

biceps brachii

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A

flexes elbow joint, supinates forearm

triceps brachii

extends elbow joint

deltoid

abducts shoulder joint

sartorius

Sartorius flexes and abducts hip joint

rectus femoris

extends knee joint, flexes hip joint

vastus lateralis

extends knee joint

vastus medalis

Vastus medialis extends knee joint

vastus intermedius

extends knee joint

tensor fascia latae

steadies knee and trunk on thigh by making ilio tibial tract taut

gracilis

adducts hip joint

tibialis anterior

prime mover of dorsiflexion

gluteus maximus

major extensor of thigh

gluteus medius

steadies pelvis especially during walking

semitendinosus

flexes knee joint, extends hip joint

semimembranosus

flexes knee joint, extends hip joint

gastrocnemius

plantar flexion

soleus

plantar flexion