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GI Anatomy > Anatomy of Upper GI Tract > Flashcards

Anatomy of Upper GI Tract Flashcards

1
Q

what joint opens the mouth

A

Temporomandibular joint

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2
Q

what type of joint is the Temporomandibular joint

A

synovial

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3
Q

what are the three jaw closing muscles

A

masseter
temporalis
medial pterygoid

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4
Q

what is the jaw opening muscle

A

lateral pteryoid

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5
Q

how many teeth do we have

A

32

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6
Q

three pairs of salivary glands

A

parotid, submandibular, sublingual

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7
Q

what nerve is involved general sensation of superior half of oral cavity

A

CN V2

maxillary branch of trigeminal nerve

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8
Q

what nerve is involved general sensation of inferior half of oral cavity

A

CN V3

mandibular branch of trigeminal nerve

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9
Q

course of maxillary branch of trigeminal nerve to superior half of oral cavity

A

travels from pons through the foramen rotunda to sensory area

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10
Q

course of mandibular branch of trigeminal nerve to inferior half of oral cavity

A

travels from pons through the foramen oval to muscles of mastication and sensory area

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11
Q

is the anterior part of the tongue in the oral cavity

A

yes

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12
Q

is the posterior part of the tongue in the oral cavity

A

no

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13
Q

what nerve is general sensory for anterior part of tongue

A

CNV3

mandibular branch of trigeminal nerve

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14
Q

what nerve is special sensory for anterior part of tongue

A

CNVII

facial nerve

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15
Q

what nerve supplies general and special sensory to posterior Part of the tongue

A

CNIX

Glossopharyngeal nerve

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16
Q

what supply does CNVII contain

A

special sensory
sensory
motor
parasympathetic

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17
Q

where does CNVII leave

A

pontomedullary junction

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18
Q

how does CNVII travel through the temporal bone

A

internal acoustic meatus then stylomastic foramen.

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19
Q

what does the CNVII supply

A

taste for anterior tongue
muscles of facial expression
glands in floor of mouth

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20
Q

what supply does CNIX contain

A 
special sensory 
sensory 
motor 
visceral affect 
parasympathetic
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21
Q

where does the glossopharyngeal nerve leave (CNIX)

A

medulla

22
Q

what does the glossopharyngeal nerve travel through (CNIX)

A

jugular foramen

23
Q

where does the glossopharyngeal nerve travel to (CNIX)

A

posterior wall of oropharynx
parotid gland
posterior tongue

24
Q

what type of reflex is the gag reflex

A

protective

25
Q

what is the nerve fibres of the sensory part of the gag reflex carried within

A

CNIX

Glossopharyngeal nerve

26
Q

what is the nerve fibres of the motor part of the gag reflex carried within

A

CNIX
Glossopharyngeal nerve

and

CNX Vagus nerve

27
Q

spraying a local anaesthetic blocks sensory action potentials in which nerves

A

CNV2 - maxillary branch of trigeminal nerve
CNV3 - mandibular branch of trigeminal nerve
CNVII- facial nerve
CNIX- Glossopharyngeal nerve

28
Q

which muscles change position of tongue during mastication, swallowing and speech

A

extrinsic muscles of tongue

29
Q

what are the extrinsic muscles of the tongue

A

palatoglossus
styloglossus
hyoglossus
genioglossus

30
Q

what muscles modify the shape of the tongue during function

A

skeletal intrinsic muscles of the tongue

31
Q

what nerve supplies the intrinsic and extrinsic muscles of the tongue

A

CNXII

32
Q

what tongue muscle is NOT supplied by CNXII

A

palatoglossus

33
Q

what type of supply is CNXII

A

Motor only

34
Q

where does the CNXII leave

A

medulla

35
Q

what does CNXII travel through

A

hypoglossal canal

36
Q

where do CNXII travel to

A

extrinsic and intrinsic muscle of tongue except palatoglossus

37
Q

what level is the UOS

A

C6

38
Q

what nerve innervates the external layer of the pharynx

A

CNX

39
Q

what artery supplies pharynx

A

common carotid artery

40
Q

what nerve innervates the internal layer of the pharynx

A

CNX and IX

41
Q

what closes the lips to prevent drooling when swallowing

A

orbicularis oris and CNVII

42
Q

what nerve allows the tongue to push the bolus posteriorly during swallowing

A

CNXII

43
Q

what nerve causes the pharyngeal constrictor muscles to contract during swallowing

A

CNX

44
Q

what nerves cause the inner longitudinal pharyngeal muscles to contract and rise the larynx, shortening the pharynx and closing the laryngeal inlet preventing aspiration

A

CNIX and CNX

45
Q

is the UOS anatomical or physiological

A

anatomical

46
Q

is the LOS anatomical or physiological

A

physiological

47
Q

where does the oesophageal plexus run

A

on surface to supply smooth muscle within its wall

48
Q

the the oesophagus posterior or anterior to the trachea

A

posterior to trachea

49
Q

is the oesophagus posterior or anterior to heart

A

posterior to the heart

50
Q

what is the cervical constriction of oesophagus

A

cricopharynxgeus muscle

51
Q

what are the thoracic constrictions of the oesophagus

A

arch of aorta

left main bronchus

52
Q

what are the diaphragmatic constrictions of oesophagus

A

oesophagus passing through the diaphragm

LOS

GI Anatomy (2 decks)

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