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Comparative Anatomy > Digestive system > Flashcards

Digestive system Flashcards

1
Q

forms temporary buccopharyngeal membrane

A

Stomodeum

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2
Q

forms bucall cabity

A

Stomodeum

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3
Q

forms cloacal membrane and then cloaca

A

Proctodeum

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4
Q

teeth, tongue, palate, oral glands

A

buccal cavity

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5
Q

Boundary between Buccal and Pharyngeal Cavities

A

Palataoglossal

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6
Q

this is unique to vert teeth

A

enamel

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7
Q

induction bewtwen embryonic epidermis and naural crest derived mesenchyme

A

teeth

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8
Q

enamel

A

epidermis

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9
Q

mesenchyme

A

dentin

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10
Q

gum line

A

gingiva

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11
Q

mucous connective tissue

A

pulp

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12
Q

hardest substance produced

A

enamel -outside

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13
Q

pulces of calcium salt deposition, there is no growth in teeth after it errupts

A

concentric rings

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14
Q

bonelike but harder

laid down slowly through out life

A

dentin- inside

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15
Q

attaches base/ root to socket

A

cementum

-may extend around enamel in herbivores

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16
Q

cementocytes lay down matrix in seasonal cycles

A

cemental annuli

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17
Q

bundles of thick collagenous fibers

A

periodontal ligament

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18
Q

most mammals have what type of teeth

A

heterodont

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19
Q

teeth continuously replaced

A

Polyphyodont

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20
Q

two sets of teeth

-mammals

A

diphyodont

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21
Q

baby or milk teeth

A

deciduous dentition

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22
Q

adult teeth

A

permanent dentition

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23
Q

enamel organ

A

epidermis

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24
Q

dermal papilla

A

mesenchyme

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25
Q

secrete enamel

A

Ameloblasts

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26
Q

secrete dentin

A

Odontoblasts

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27
Q

tooth development

A
  1. crown
  2. root
  3. cementum
  4. periodontal ligament
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28
Q

with sockets

A

Thecodont

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29
Q

shallow socket

A

Acrodont

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30
Q

connected on mesial side of jaw

A

Pleurodont

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31
Q

allows teeth to bend inwards so prey cant escape

A

serrae

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32
Q

some snakes with hollow that allows for venom and can be replaced

A

polyphyodont

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33
Q

crowns low

A

Brachydont

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34
Q

crows high

A

Hypsodont

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35
Q

rounded cusps

-us

A

Bunodont

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36
Q

cusps drawn into ridges

A

Lophodont

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37
Q

cresent shaped cusps

A

selenodont

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38
Q

type of sectorial teeth that cats and dogs have

A

carnassials

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39
Q

tongue is opperated by

A

hyoid apparatus

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40
Q

the toungue is reduced in what

A

secondarily aquatic species

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41
Q

forms from endoderm

A

pharynx

42
Q

form on lateral walls

A

pharyngeal pouches

43
Q

meet inpocketing of ectoderm

A

branchial grooves

44
Q

form partition at point of contact

-perforated to form gill slits

A

closing plates

45
Q

mammals tusks evolved from what?

A

elephant- upper incisors
Narwhal-left upper incisor
walrus- canines

46
Q

tongue forms floor of pharynx with keratinized teeth

A

hagfish and lampreys

47
Q

tongue forms from floor of pharynx, not muscularized

A

fish

48
Q

tongue forms from hypobranchial musculature and opperated by hyoid apparatus

A

tetrapods

49
Q

move food in mouth, needs wet adhesion

A

intraoral transport

50
Q

tubotympanic recess envelops ear bones

A

1st pharyngeal pouch

51
Q

forms eustachian tube and part of tympanic cavity

A

1st pharyngeal pouch

52
Q

palatine tonsil

A

2nd

53
Q

parathyroid

A

3rd and 4th

54
Q

ultimobranchial bodies- separate glands in most, part of thyroid in mammals

A

5th

55
Q

form c cells and control blood calium

A

5th

56
Q

all arches in fished. variable in amphibians, III and IV in mammals

A

Thymus

57
Q

roof of pharynx

A

pharyngeal tonsil

58
Q

thyroid, part of tongue, lingual tonsil and lung primordium

A

floor

59
Q

three temporary seals form when a mamml is chewing

A

anterior-lips
middle-between soft palate and tongue
posterior- between epiglotis and soft palate

60
Q

when tongue expands against soft palate

A

swallowing

61
Q

where does food gather when swallowing

A

vallecula

62
Q

closes to prevent aspiration of food into trachea

A

glottis

63
Q

helps us with swalloing without blocking air

A

posterior seal

64
Q

most digestion occurs here

A

alimentary canal

65
Q

epithelium that lines the lumen

A

mucosa

66
Q

loose connective tissue

-nerve plexes

A

submucosa

67
Q

circular and logitudinnal smooth muscle

A

muscularis externa

68
Q

together with mesentery

A

serosa

69
Q

may store food-prey swallowed whole

A

esophagus

70
Q

retard putrefaction by bacteria

A

Hydrochloric acid

71
Q

folds when relaxed

A

rugae

72
Q

produces mucas

A

cardiac glands

73
Q

mucas partially for neutrulization- this burns

A

pyloric glands

74
Q

produce hydrochloric and digestive enzymes

A

fundus glands

75
Q

mammals fundic glands

A

cheif and parietal cells

76
Q

oxyntopeptic cells

A

HCl and Pepsinogen

77
Q

loss of gastric glands in rodents

A

nonglandular epithelium

78
Q

sphincter regulate movement into the large intestine

A

ileocolic valve

79
Q

terminal section receive products from urinary or reproductive systems

A

cloaca

80
Q

only products of the alimentary canal

A

rectum

81
Q 
function is to move food 
absorb products of digestion, water
A

intestine

82
Q

neutralize chyme

A

duodenal or brunners gland

83
Q

have no stomach, and no straight gut that folds in lumen

A

hagfishes and lampreys

84
Q

diet of detritus

A

coprolites

85
Q

suggest scroll valve

A

coiled (absorptive area)

86
Q

have a spiral valve intestine

A

chondrichthyes

87
Q

have no stomach

A

chimaeras

88
Q

some carnivores teleosts have this, it aids in digestion and food absorption

A

pyloric caecae

89
Q

where divisions of small intestine become clear

A

amphibians

90
Q

have well muscularized gizzard and a glandular region

A

crocodilians

91
Q

diverticulum of esophagus that hole food and crop milk in pigeons

A

crop

92
Q

glandular stomach

A

proventriculus

93
Q

stomach

A

abomasum

94
Q

becomes venom gland in many snakes

A

duvernoys gland

95
Q

bathe eye and vomeronasal orcan

A

lacramal and harderian gland

96
Q

2nd largest organ in humans

A

liver

97
Q

emulsify fats

A

bile

98
Q

Islets of Langerhans

A

Endocrine

99
Q

Pancreatic ice

A

Exocrine

100
Q

shuts down the production of acid

A

PGE2

Comparative Anatomy (14 decks)

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