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ANATOMY > Tongue, Pharnyx, Oesophagus and stomach > Flashcards

Tongue, Pharnyx, Oesophagus and stomach Flashcards

1
Q

What are the extrinsic muscles of tongue?

A

Styloglossus
Hyoglossus
Genioglossus

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2
Q

where does styloglossus orginate?

A

styloid process

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3
Q

where does hyoglossus originate?

A

hyoid bone

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4
Q

where does genioglossus originate?

A

superior genial tubercles

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5
Q

what does styloglossus do

A

pulls tongue posterosuperiorly

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6
Q

what does hyoglossus do?

A

pulls tongue inferiorly

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7
Q

what does genioglossus do ?

A

pulls tongue anteriorly

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8
Q

what are intrinsic muscles of tongue?

A

Longtidunal
Vertical
Transverse

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9
Q

what does longitudinal muscles bundle into?

A

superior and inferior bundles

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10
Q

what does superior bundle do?

A

moves tip up

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11
Q

what does inferior bundle do

A

pulls tip inferiorly

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12
Q

what does vertical muscle do?

A
  • thins tongue in superoinferior axis
  • tongue flattens
  • tongue widens along mediolateral and anteroposterior axis
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13
Q

What does transverse muscle do?

A

make tongue narrow, longer and thinner

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14
Q

What nerve supplies motor impulses to tongue muscles?\

A

Hypoglossal nerve, CN 12

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15
Q

How is tongue divided?

A

into anterior 2/3 and posterior 1/3

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16
Q

v shaped boundary on tongue?

A

Sulcus terminalis

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17
Q

Islands on tongue?

A

Circumvallate papillae

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18
Q

what is a branch of facial nerve?

A

Chorda tympani

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19
Q

what do taste fibres initially travel in?

A

lingual nerve

20
Q

what is the lingual nerve a branch of?

A

posterior trunk of mandibular division of CN5

21
Q

what is sensory innervation to 2/3 tongue?

A

chorda tympani branch of CN7

22
Q

what is sensory innervation to posterior 1/3 of tongue?

A

supplied by Glossopharyngeal nerve. CN9

23
Q

What does branches of CN9 carry to tongue?

A

taste and sensory fibres

24
Q

what regions is pharynx divided into?

A

Nasopharynx, Oropharynx and laryngopharynx

25
Q

where is nasopharynx?

A

posterior to nasal cavity

26
Q

where is oropharynx?

A

posterior to oral cavity

27
Q

where is laryngopharynx?

A

posterior to larynx

28
Q

what are the outer muscle layers of pharynx?

A

superior, middle and inferior constrictor

29
Q

where are 3 outer muscles fused?

A

at median pharyngeal raphe to form outer layer

30
Q

Where does superior constrictor originate ?

A

pterygomandibular raphe to mylohoid line of mandible

31
Q

where does superior constrictor insert?

A

into median pharyngeal raphe and attaches to base of skull

32
Q

where does middle constrictor originate?

A

hyoid bone

33
Q

where does middle constrictor insert

A

median pharyngeal raphe, overlaps inferior part of superior constrictor

34
Q

where does inferior constrictor originate?

A

external surface of larynx

35
Q

where does inferior constrictor insert?

A

median pharyngeal raphe, overlaps inferior part of middle constrictor

36
Q

what is continuous with superior constrictor?

A

buccinator at pterygomandibular raphe

37
Q

what are INNER longitudinal muscles of pharynx ?

A

Salpingopharyngeus
palatopharyngeus
stylopharyngyeus

38
Q

where does Salpingopharyngeus originate?

A

auditory tube, eustachian

39
Q

where does palateoharyngeus originate ?

A

hard and soft palates

40
Q

where does stylopharyngeus originate?

A

styloid process

41
Q

what nerve is stylopharyngues supplied by

A

Glossopharyngeal nerve

42
Q

what do inner muscles of pharynx do?

A

elevate pharynx

43
Q

What is oesophagus muscle arrangement?

A

outer muscle layer is longitudinal

inner muscle layer is circular

44
Q

where does oesophagus receive blood supply ?

A

thoracic aorta

45
Q

where does de02 blood from oesophagus drain into?

A

gastric veins then into liver

ANATOMY (6 decks)

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