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BMSC Regional Gross Anatomy 2 > The oral cavity > Flashcards

The oral cavity Flashcards

1
Q

what are the tissue folds either side of the uvula of the soft palate

A

arches

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2
Q

the anterior folds either side of the uvula of the soft palate are called

A

palatoglossal arches

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3
Q

the posterior folds either side of the uvula of the soft palate are called

A

palatopharyngeal arches

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4
Q

how are the arches created

A

by muscles of the palate that pass to the tongue and pharynx

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5
Q

what is found in between the arches

A

collection of lymphoid tissue called the palatine tonsils

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6
Q

what is another name for the opening of the oral cavity - mouth

A

fauces

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7
Q

the lateral walls of the oral cavity are called

A

buccinator

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8
Q

what muscle forms a diaphragm in the floor of the mouth

A

mylohyoid

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9
Q

what is found superior to mylohyoid forming a diaphragm in the floor of the mouth

A

geniohyoid (inside the mouth)

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10
Q

what is found inferior to mylohyoid forming a diaphragm in the floor of the mouth

A

anterior belly of digastric (in anterior triangle of neck)

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11
Q

what does ‘genio’ mean

A

mandible

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12
Q

what does ‘glossus’ mean

A

tongue

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13
Q

where does mylohyoid attach on the mandible

A

mylohyoid line of the mandible

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14
Q

where does geniohyoid attach on the mandible

A

inferior genial tubercle

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15
Q

where does genioglossus attach on the mandible

A

superior genial tubercle

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16
Q

what is the principle function of the supra-hyoid muscles

A

elevate the hyoid bone

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17
Q

what is the innervation of mylohyoid

A

mandibular division of the trigeminal (CN V3)

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18
Q

what is the function of mylohyoid

A

elevate hyoid bone and oral floor

depress mandible

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19
Q

what is the innervation of the posterior belly of digastric

A

facial nerve CN VII

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20
Q

what is the innervation of the anterior belly of digastric

A

mandibular division of the trigeminal (CN V3)

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21
Q

what is the function of the anterior division of the digastric

A

elevate hyoid or depress mandible

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22
Q

what is the innervation of stylohyoid

A

facial nerve (CN VII)

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23
Q

what is the function of stylohyoid

A

elevate hyoid

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24
Q

what is the innervation of geniohyoid

A

C1 in hypoglossal

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25
what is the function of geniohyoid
elevate hyoid bone
26
what 2 muscles sit either side of the stylomastoid foramen where the facial nerve exits the skull
posterior belly of digastric | stylohyoid
27
where does the posterior belly of digastric attach
mastoid process
28
where does stylohyoid attach
styloid process of temporal bone
29
what nerve innervates the lower teeth and gums and the muscles of mastication
mandibular division of the trigeminal nerve
30
why does it make sense that the mandibular division of the trigeminal nerve innervates the mylohyoid and anterior belly of digastric
both attach to the mandible
31
why is geniohyoid innervated by C1 carried in hypoglossal
sits close to hypoglossal nerve
32
the majority of the submandibular gland crosses over the surface of what muscle to lie in the floor of the mouth
mylohyoid
33
where is the sublingual gland
lies entirely in the floor of the mouth under the tongue
34
where does the parotid gland open
at the upper second molar at each side
35
where do the submandibular glands open
duct that opens between the 1st and 2nd incisors either side of the frenulum in floor of mouth
36
where does the sublingual gland open
many small ducts that open directly into the floor of the mouth
37
what supplies parasympathetic secretomotor to the submandibular gland
CN VII
38
what supplies parasympathetic secretomotor to the parotid gland
CN IX
39
what supplies parasympathetic secretomotor to the sublingual gland
CN VII
40
describe the relationship of the submandibular duct and the lingual nerve
lingual nerve initially superior then passes inferior
41
what supplies sensory innervation to the anterior 2/3 of the tongue
lingual nerve
42
the lingual nerve is a branch of what
mandibular division of trigeminal nerve
43
what carries taste and sympathetic fibres from the facial nerve
lingual nerve
44
what is the main motor supply to the tongue musculature
hypoglossal nerve
45
the hypoglossal nerve is where in relation to the submandibular duct
inferior
46
what are the largest papillae on the tongue
vallate papillae
47
where are the vallate papillae found
form a line 2/3 of the way along the tongue
48
why is the posterior third of the tongue bumpy
presence of the lingual tonsil which is embedded into this part of the tongue
49
describe the lymphoid tissue of the mouth
lingual and palatine tonsils guard the entrance to the oropharynx further lymphoid tissue (nasopharyngeal tonsil or adenoidal tonsil) to protect nasopharynx
50
what lymphoid tissue protects the nasopharynx
nasopharyngeal tonsil/adenoidal tonsil
51
what is the line that marks the anterior 2/3 and posterior 1/3 of the tongue
foramen caecum
52
what are the taste buds at the front of the tongue
fungiform
53
what are the taste buds in the middle of the anterior 2/3 of the tongue
filiform
54
what are the taste buds behid the vallate taste buds
foliate
55
what are the 4 taste buds of the lingual papillae
foliate vallate filiform fungiform
56
the posterior 1/3 of the tongue is also called
post-sulcal part (root)
57
the anterior 2/3 of the tongue is also called
presulcal part (body)
58
the anterior 2/3 of the tongue receives general sensory input from
lingual nerve (CN V3)
59
the anterior 2/3 of the tongue receives special taste sensation from
the facial nerve carried by the lingual nerve
60
how do fibres from the facial nerve reach the anterior 2/3 of the tongue to supply special taste sensation
chorda tympani branch of the facial nerve carries these fibres and joins the lingual nerve in the infratemporal fossa
61
the chorda tympani joins the lingual nerve where
infratemporal fossa
62
what supplies general sensory and special sensory to the posterior 1/3 of the tongue
glossopharyngeal
63
some texts will show what nerve supplying a small area at the most posterior part of the tongue
vagus (internal laryngeal nerve)
64
what is the function of the intrinsic muscles of the tongue
change shape of tongue to mould food bolus - muscle fibres orientated in different directions to allow this to happen
65
what nerve innervates all of the intrinsic muscles of the tongue
hypoglossal CN XII
66
what is the function of the extrinsic muscles of the tongue
move the tongue around the oral cavity, this helps to mould food and allows bolus of food to be passed to the back of the oral cavity in preparation for swallowing
67
what are the 4 extrinsic muscles of the tongue
genioglossus palatoglossus styloglossus hyoglossus
68
what is the movement of genioglossus
depress tongue and protrude tip
69
what is the movement of palatoglossus
elevate tongue (move soft palate)
70
what is the movement of styloglossus
elevate, retract tongue
71
what is the movement of hyoglossus
depress tongue
72
what are the attachments of hyoglossus
hyoid bone and tongue
73
what are the attachments of styloglossus
styloid process and tongue
74
what are the attachments of palatoglossus
palate
75
what are the attachments of genioglossus
mandible and tongue
76
the hypoglossal nerve innervates all of the extrinsic muscles of the tongue except
palatoglossus
77
what innervates palatoglossus
vagus nerve CN X in the pharyngeal plexus
78
what is the blood supply to the tongue
from the lingual artery
79
describe the course of the lingual artery
the lingual artery is crossed by the hypoglossal nerve, psases under the hyoglossus and enters the floor of the mouth
80
the lingual artery is crossed by the ____ nerve, passes under the ______ and enters the floor of the mouth
cross by the hypoglossal nerve passes under hyoglossus
81
what does the lingual artery supply
floor of the mouth, the extrinsic muscles and sends a deep branch into the body of the tongue
82
where is the deep lingual artery found
body of the tongue
83
where does the lingual artery come from
2nd anterior branch of the ECA
84
where does the tongue drain blood
mainly to the lingual vein
85
what does the lingual vein communicate with
internal jugular vein
86
special sensory to anterior 2/3 tongue
chorda tympani (CN VII)
87
general sensory to anterior 2/3 tongue
lingual nerve CNV3
88
the lingual nerve descends into the tongue from the ----- fossa
infratemporal fossa
89
where does the hypoglossal nerve pass from
hypoglossal canal at the base of the skull
90
the hypoglossal nerve passes ______ to hyoglossus
anterior
91
the hypoglossal nerve passes over (anterior to) hyoglossus and under (posterior to) ------ to enter the floor of the mouth
under (posterior to) mylohyoid
92
where do nodes from the tip of the tongue drain
submental
93
where do nodes from the lateral edges of the tongue drain
submandibular
94
central and posterior parts of the tongue drain where
deep cervical

BMSC Regional Gross Anatomy 2 (36 decks)

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