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Gross Anatomy of Head and Neck > Mouth, Tongue, and Submandibular Region > Flashcards

Mouth, Tongue, and Submandibular Region Flashcards

Lecture 9

1
Q

oral cavity proper

A

space medial to teeth (bounded by teeth), contains tongue

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2
Q

vestibule

A

space between lips and cheeks and teeth

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3
Q

sulcus terminalis

A

V-shaped groove divides tongue into the body and base

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4
Q

body

A

the anterior 2/3s, in the oral cavity

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5
Q

base

A

the posterior 1/3, in the pharynx; its surface is covered by lingual tonsil

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6
Q

papillae

A

vallate, foliate, fungiform, filiform papillae (nodules), some have taste buds

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7
Q

functions of the tongue

A

speech, manipulation and positioning of food, taste, swallowing, cleansing of the oral cavity

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8
Q

extrinsic muscles of the tongue

A

genioglossus
hypoglossus
styloglossus
palatoglossus

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9
Q

genioglossus

A

largest, fan shaped muscle; protrudes and depresses the tongue

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10
Q

hyoglossus

A

depresses and retracts the tongue

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11
Q

styloglossus

A

retracts and elevates the tongue

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12
Q

palatoglossus

A

elevates the base of the tongue

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13
Q

intrinsic muscles of the tongue originate and insert

A

within the tongue

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14
Q

intrinsic muscles of the tongue function

A

they change the shape of the tongue and play a key role in speech

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15
Q

nerve supply of both extrinsic and intrinsic muscles of the tongue

A

hypoglossal nerve (CN XII), except Palatoglossus muscle (CN X)

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16
Q

sensory innervation of the tongue

A

anterior 2/3s of the tongue and posterior 1/3 of the tongue

17
Q

anterior 2/3s of the tongue sensory innervation

A

general sensation supplied by lingual nerve from V3
special sensation by facial nerve (CN VII) via Chorda tympani

18
Q

posterior 1/3 of the tongue sensory innervation

A

general sensation + special sensation (taste): Glossopharyngeal nerve (CN IX)

19
Q

motor innervation of the tongue

A

Hypoglossal nerve (CN XII) except Palatoglossus muscle (Vagus, CN X)

20
Q

parasympathetic innervation of the tongue (to mucosa of the tongue)

A

Chorda tympani from Facial nerve - via Lingual nerve to the tongue

21
Q

motor innervation

A

all tongue muscles: Hypoglossal nerve (CN XII), except Palatoglossus (CN X)

22
Q

posterior 1/3 tongue innervation

A

general sensory and special sensory: Glossopharyngeal nerve (CN IX)

23
Q

anterior 2/3s tongue innervation

A

general sensory: lingual nerve, branch of V3 of CN V
special sensory (taste): Chorda tympani (branch of CN VII)

24
Q

lingual artery

A

provides blood supply to the tongue
a branch of the external carotid artery
lies on the medial aspect of the hypoglossus muscle

25
Q

submandibular region

A

region between the mandible and the hyoid bone

26
Q

submandibular gland

A

salivary gland
wraps around the posterior free border of the mylohyoid muscle

27
Q

two parts of the submandibular gland

A

superficial portion: found in submandibular triangle of the neck
deep portion: in the floor of the mouth

28
Q

submandibular duct is the

A

Wharton’s duct

29
Q

submandibular duct carries saliva from

A

the submandibular gland to the mouth
approx. 5 cm long

30
Q

the submandibular duct arises from and travels

A

the deep portion of the submandibular gland, and travels anteriorly in the floor of the mouth

31
Q

submandibular duct terminates at

A

the sublingual papilla (caruncle) on both sides of the lingual frenulum

32
Q

the submandibular duct travels on the lateral aspect of the ________ muscle and is crossed by the ______ _____

A

hypoglossus muscle
is crossed by the lingual nerve

33
Q

sublingual gland is located

A

under the tongue, beneath the mucous membrane of the floor of the mouth; forms the sublingual fold (elevated crest of mucous membrane)

34
Q

sublingual gland ducts

A

approx. 12 tiny ducts from the gland empty directly upward through the sublingual fold
some ducts of the sublingual gland open into the submandibular duct

35
Q

what creates the division between the submandibular and sublingual spaces

A

mylohyoid muscle

36
Q

submandibular space

A

between mylohyoid muscle and the deep cervical fascia
contains fat, submandibular gland (superficial part), lymph nodes, digastric muscles

37
Q

sublingual space

A

between mylohyoid muscle and genioglossus muscle
contains geniohyoid muscle, sublingual gland, submandibular gland (deep portion), submandibular duct, lingual nerve, hypoglossal nerve (CN XII), lingual artery

Gross Anatomy of Head and Neck (11 decks)

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