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Anatomy > Unit 3: The neck and face > Flashcards

Unit 3: The neck and face Flashcards

1
Q

Submental subdivision of anterior triangle

A

body of hyoid, anterior belly or digastric, mandibular symphysis, includes suprahyoid muscles, lymph nodes and mylohyoid, origin of anterior jugular

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2
Q

Submandibular subdivision of anterior triangle

A

inferior mandible, anterior and posterior digastric, conains submandibular gland, portion of hypoglossal nerve, facial artery and vein, and suprahyoid muscles

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3
Q

Carotid subdivision of anterior triangle

A

Superior belly of omohyoid, anterior SCM, posterior belly of digastric, contains common carotid, internal jugular, vagus, carotid body and sinus

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4
Q

Muscular subdivision of anterior triangle

A

midline of neck, superior belly of omohyoid, anterior SCM, contains infrahyoid muscles, parathyroid glands

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5
Q

Mylohyoid

A

N: mylohyoid A elevates hyoid, floor of mouth and tongue during swallowing and speaking

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6
Q

Stylohyoid

A

N: stylohyoid branch of facial nerve A elevate and retract hyoid

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7
Q

Geniohyoid

A

N: C1 of hypoglossal A: pulls hyoid anerosuperioly, shorten floor of mouth, widens pharynx

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8
Q

Digastric

A

N: (anterior) mylohyoid, (posterior) digastric branch of facial A: elevate and steady hyoid, depresses mandible against resistance

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9
Q

Innervation of the face

A

CN V trigeminal: sensory, motor for muscles of mastication; CN VII facial: motor

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10
Q

First branch of trigeminal

A

Opthalmic V1: purely sensory; supra-orbital, supratrochlear, infratrochlear: innervates scalp, forehead and lacrimal glands*

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11
Q

Second branch of trigeminal

A

Maxillary V2; infraorbital (teeth, eyelid, top lip), zygomaticotemporal (temple), zygomaticofacial (skin on cheek)

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12
Q

Third branch of trigeminal

A

Mandibular V3; sensory and motor: mental (skin of lip and chin), buccal (cheek, gums), auriculotemporal (ear)

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13
Q

Bell’s Palsy

A

loss of innervation of facial muscles; loss of facial tone and expression

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14
Q

Occipitofrontalis

A

Front belly (elevates eyebrows and wrinkles skin of forehead), occipital belly (retracts scalp, synergist to front), obicularis oculi (closes eyelid; palpebral and orbital parts)

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15
Q

Levator labii superioris

A

part of dilator of mouth, elevate upper lip, show sadness

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16
Q

Buccinator

A

presses cheek against molars, keeps food in cheek, resists detension

17
Q

Zygomaticus major

A

dilator of mouth; elevate labial commissure (smile and sneer)

18
Q

Levator anguli oris

A

part of dilator, widens oral fissure (gin/grimace)

19
Q

Risorius

A

dilator, depresses labial (sadness)

20
Q

depressor anguli oris

A

dilator, depresses labial (sadness)

21
Q

depressor labii inferioris

A

dilator, retracts or everts lower lip (sadness)

22
Q

Mentalis

A

elevates and protrudes lower lip, elevates skin of chin (doubt)

23
Q

Facial nerve

A

CN VII: posterior auricular-occupitalis, temporal, zygomatic, buccal, marginal mandibular, cervical

24
Q

Posterior auricular supplies

A

occupitalis

25
Q

temporal supplies

A

O. oculi and inferior muscle

26
Q

Buccal supplies

A

buccinator and O oris

27
Q

marginal mandibular supplies

A

risorius and chin muscles

28
Q

cervical supplies

A

platysma

29
Q

Cutaneous scalp nerves

A

greater occipital and lesser occipital (C2)

30
Q

Blood supply

A

mostly external carotid: facial, superficial temporal, and occipital; some internal carotid

31
Q

Facial

A

Along inferior mandible deep to platysma, crosses inferior border anterior to masseter, mandible, buccinator, maxilla to canthus, superior and inferior labial branch

32
Q

Superficial temporal

A

formed at TMJ joint between TMJ and auricle, produced the transverse facial almost immediately, supplies parotid gland and masseter, divides into frontal and parietal branch in scalp

33
Q

Occipital

A

courses inferiorly under auricle through posterior triangle, emerges at back of head to supply scalp and occipitalis

34
Q

Internal carotid

A

supplies superficial face via supratrochlear and supra orbital arteries

35
Q

SCALP

A

Skin, connective tissue, aponeurosis, loose CT, periosteium; arteries within CT, held tightly, will bleed profusely, infection transmitted easily

36
Q

Veins of head and neck

A

most with arteries, abundant anastomoses, drain to external or internal jugular via facial vein

Anatomy (15 decks)

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