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Anatomy and Physiology I > Axial Muscles: Actions ONLY > Flashcards

Axial Muscles: Actions ONLY Flashcards

1
Q

Frontalis

A

Raises eyebrows and wrinkles forehead

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2
Q

Orbicularis Oculi

A

Closes eyes

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3
Q

Zygomaticus

A

Raised corner of mouth; smiling muscles

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4
Q

Depressor Anguli Oris

A

Pulls down corner of mouth; frowning muscle.

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5
Q

Orbicular oris

A

Purses lips; kissing muscles

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6
Q

Temporalis

A

Raises jaw;chewing action

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7
Q

Masseter

A

Raises jaw; chewing action

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8
Q

Buccinator

A

Holds food between teeth while chewing

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9
Q

Pterygoid

A

Grinding side to side movements

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10
Q

Suprahyiod Group
(Digastric, stylohyiod, mylohyiod, and heniohyoid)

A

Widen pharynx, close larynx (pulls hyoid up and toward mandible)

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11
Q

Tensor veli palatini

A

Close nasal passage by elevating soft palate

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12
Q

Levator veli palatini

A

Close nasal passage by elevating soft palate

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13
Q

Pharyngeal constrictors

A

Propel food throught pharynx into esophagus

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14
Q

Infrahyoid (sternohyoid, sternohyoid, omohyoid, thyrohyoid)

A

Return hyoid and larynx to pre-swallowing position

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15
Q

Sternocleidomastoid

A

Flexion, lateral movement

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16
Q

Scalene

A

Lateral movement

17
Q

Splenius (capitis and cervicus)

A

Extension

18
Q

Trapezius

A

Extension

19
Q

Erector spinae

A

Extension; if muscles on both sided of vertebral column contracted- spine and head are erect; if muscles on only one side are contracted- spine if bent laterally.

20
Q

Quadratus lumboris

A

Flexion

21
Q

Internal intercostals

A

Lower ribs and compress lungs (exhale)

22
Q

External intercostals

A

Raise ribs and expand lungs (inhale)

23
Q

Diaphragm

A

Contraction-moves down and expands thoracic cavity (inhale); Relaxation-moves up and compress thoracic cavity (exhalation)

24
Q

Internal oblique

A

Compresses abdomen; force respiration; some role flexion and rotation of spine.

25
Q

External oblique

A

Compresses and abdomen; force respiration; some role flexion and rotation of spine

26
Q

Transverse abdominus

A

Compresses abdomen; forced respiration; some role flexion and rotation of spine.

27
Q

Rectus abdominus

A

Flexion of spine; sit up muscle

28
Q

Levator ani & coccygeus

A

Elevate pelvic floor; prevent increased intraabdominal pressure

29
Q

External urethral and anal sphincters

A

Voluntary control urination or defecation

30
Q

Ischiocavernosus & Bulbospongiosus

A

Erection of penis or clitoris

Anatomy and Physiology I (22 decks)

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