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SF2 Exam 1 > Muscles > Flashcards

Muscles Flashcards

1
Q

Orbicularis oculi

A 
Orbital part (surrounds eyelids) - buries eyelids
Palpebral part (within eyelids) - closes eyelids
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2
Q

Compressor naris

A

Compress nasal cartilages

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3
Q

Dilator naris

A

Dilates nostrils

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4
Q

Procerus

A

Wrinkles skin of nose

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5
Q

Orbicularis oris

A

Closes mouth (surrounds lips)

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6
Q

Levator labii superioris

A

Lifts upper lip

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7
Q

Zygomaticus major and minor

A

Raise and pull upper lip laterally

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8
Q

Levator anguli oris

A

Raises corner of mouth

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9
Q

Risorius

A

Smiling muscle

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10
Q

Depressor anguli oris

A

Tragedy muscle

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11
Q

Depressor labii inferioris

A

Depress lower lip

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12
Q

Mentalis

A

Wrinkles skin of chin

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13
Q

Buccinator

A

Compresses mouth and keeps food between teeth when chewing

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14
Q

Frontalis

A

Move scalp, raise eyebrows

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15
Q

Occipitalis

A

Move scalp

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16
Q

Platysma

A

Stretches skin of neck

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17
Q

Medial rectus

A

Adduct eye

CN III

18
Q

Lateral rectus

A

Abduct eye

CN VI

19
Q

Inferior rectus

A

Adduct eye
Lower eye
Laterally rotate eye
CN III

20
Q

Superior rectus

A

Adduct eye
Raise eye
Medically rotate eye
CN III

21
Q

Superior oblique

A

Abduct eye
Lower eye
Medically rotate eye
CN IV

22
Q

Inferior oblique

A

Abduct eye
Raise eye
Laterally rotate eye
CN III

23
Q

Sternohyoid

A

Infrahyoid muscle

Action: Depresses hyoid bone
Action Ansa Cervicallis

24
Q

Omohyoid

A

Infrahyoid muscle

Action: depresses hyoid bone
Nerve: ansa cervicallis

25
Q

Thyrohyoid

A

Infrahyoid muscle

Action: Depresses hyoid bone, elevates larynx
Nerve: C1 via branch hitch-hiking with CN XII

26
Q

Sternothyroid

A

Infrahyoid muscle

Action: Depresses thyroid cartilage, indirectly depresses hyoid bone and larynx
Nerve: Ansa Cervicallis

27
Q

Sternocleidomastoid

A

Origin: Two heads - sternum (manubrium) and clavicle (medial 1/3)
Insertion: both heads to temporal bone (mastoid process)
Action: Acting on both sides - flex neck, acting on one side - rotate head so face is directed to opposite side

Nerve: CN XI

28
Q

Scalenus anterior and mediums

A

Origin: Vertebra (transverse processes of upper cervical)
Insertion: Rib 1
Action: flex neck and elevate rib 1
Nerve: Branches of ventral rami of cervical spinal nerves

29
Q

Digastric

A

Surpahyoid muscle

Action: elevated hyoid bone, depresses mandible

Nerve: Posterior belly - CN VII
Anterior belly - CN V - V3

30
Q

Stylohyoid

A

Suprahyoid muscle

Action: elevates hyoid

Nerve: CN VII

31
Q

Mylohyoid

A

Suprahyoid muscle

Action: elevates hyoid bone, raises floor of mouth during swallowing

Nerve: CN V - V3

32
Q

Geniohyoid

A

Suprahyoid muscle

Action: Elevates hyoid bone, draws hyoid forward

Nerve: C1 via branch hitch-hiking with CN XII

33
Q

Cricothyroid

A

Action - tenses vocal fold, raises pitch of sound

Nerve - external laryngeal n. (X)

34
Q

Thyroarytenoid

A

Relaxes vocal fold, decreases pitch of sound

Recurrent Laryngeal n. (X)

35
Q

Posterior cricoarytenoid

A

ABducts vocal folds, opens Roma glottidis

Recurrent Laryngeal n. (X)

36
Q

Lateral cricoarytenoid

A

ADducts vocal folds, closes Roma glottidis

Recurrent Laryngeal n. (X)

37
Q

Arytenoid (transverse arytenoid)

A

ADducts vocal folds, closes Roma glottidis

Recurrent Laryngeal n. (X)

38
Q

Aryepiglottic m.

A

Pulls down epiglottis during swallowing

Recurrent Laryngeal n. (X)

39
Q

Masseter

A

Muscle of mastication

Trigeminal nerve (CN V)

40
Q

Temporalis

A

Muscle of Mastication

Trigeminal Nerve

41
Q

Lateral Pterygoid

A

Muscle of mastication - opens mouth

Trigeminal nerve

42
Q

Medial Pterygoid

A

Muscle of Mastication - closes mouth

Trigeminal nerve

SF2 Exam 1 (3 decks)

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