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Small Animal Anatomy > Muscle Actions and Innervations > Flashcards

Muscle Actions and Innervations Flashcards

1
Q

Platysma

A

“growl” muscle; Facial n. (VII)

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2
Q

Orbicularis oris

A

“snarl” muscle; Facial n. (VII)

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3
Q

Buccinator

A

return food from vestibule to occlusal surface of teeth; Facial n. (VII)

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4
Q

Levator nasolabialis

A

dilates nostril, raises superior lip; Facial n. (VII)

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5
Q

Orbicularis oculi

A

close palpebral fissure; Palpebral n. (branch of VII)

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6
Q

Cricothyroid

A

tense vocal fold; Cranial laryngeal n.

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7
Q

Dorsal cricoarytenoid

A

opens glottis; Caudal laryngeal n.

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8
Q

Lateral cricoarytenoid

A

closes glottis; Caudal laryngeal n.

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9
Q

Thyroarytenoid and Vocalis

A

relax vocal fold; Caudal laryngeal n.

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10
Q

Temporalis

A

close jaw; branch of Mandibular n. (Trigeminal V3)

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11
Q

Masseter

A

close jaw; branch of Mandibular n. (Trigeminal V3)

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12
Q

Pterygoid

A

close jaw; branch of Mandibular n. (Trigeminal V3)

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13
Q

Digastricus

A

open jaw; branch of Mandibular n. (Trigeminal V3)

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14
Q

Styloglossus

A

retract and elevate tongue; Hypoglossal n. (XII)

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15
Q

Hyoglossus

A

retract and depress tongue Hypoglossal n. (XII)

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16
Q

Genioglossus

A

protrude tongue, retract apex of tongue; Hypoglossal n. (XII)

17
Q

Sternohyoid

A

pull tongue and larynx caudally; ventral branches of cervical spinal nerves and Hypoglossal n. (XII)

18
Q

Thyrohyoid

A

pull tongue and larynx caudally; ventral branches of cervical spinal nerves and Hypoglossal n. (XII)

19
Q

Mylohyoid

A

sling that supports tongue; Mylohyoid n. (branch of Trigeminal V3)

20
Q

Geniohyoid

A

draw hyoid apparatus and larynx rostrally; Hypoglossal n. (XII)

21
Q

Cricopharyngeus

A

swallowing; pharyngeal branches of Glosspharyngeal (IX) and Vagus (X) n.

22
Q

Thyropharyngeus

A

swallowing; pharyngeal branches of Glosspharyngeal (IX) and Vagus (X) n.

23
Q

Hyopharyngeus

A

swallowing; pharyngeal branches of Glosspharyngeal (IX) and Vagus (X) n.

24
Q

Levator palpebrae

A

elevates superior lid; Oculomotor n. (III)

25
Q

Dorsal Oblique

A

rotate eye around longitudinal axis from anterior to posterior through center of eye; Trochlear n. (IV)

26
Q

Ventral Oblique

A

rotate eye around longitudinal axis from anterior to posterior through center of eye; Oculomotor n. (III)

27
Q

Dorsal Rectus

A

rotate eye around horizontal axis through equator medial to lateral; Oculomotor n. (III)

28
Q

Lateral Rectus

A

rotate eye around a vertical axis through equator dorsal to ventral; Abducent n. (VI)

29
Q

Medial Rectus

A

rotate eye around a vertical axis through equator dorsal to ventral; Oculomotor n. (III)

30
Q

Ventral Rectus

A

rotate eye around horizontal axis through equator medial to lateral; Oculomotor n. (III)

31
Q

Retractor Bulbi

A

pull eye into socket; Abducent n. (VI)

Small Animal Anatomy (2 decks)

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