Digestive system Flashcards
1
Q
forms temporary buccopharyngeal membrane
A
Stomodeum
2
Q
forms bucall cabity
A
Stomodeum
3
Q
forms cloacal membrane and then cloaca
A
Proctodeum
4
Q
teeth, tongue, palate, oral glands
A
buccal cavity
5
Q
Boundary between Buccal and Pharyngeal Cavities
A
Palataoglossal
6
Q
this is unique to vert teeth
A
enamel
7
Q
induction bewtwen embryonic epidermis and naural crest derived mesenchyme
A
teeth
8
Q
enamel
A
epidermis
9
Q
mesenchyme
A
dentin
10
Q
gum line
A
gingiva
11
Q
mucous connective tissue
A
pulp
12
Q
hardest substance produced
A
enamel -outside
13
Q
pulces of calcium salt deposition, there is no growth in teeth after it errupts
A
concentric rings
14
Q
bonelike but harder
laid down slowly through out life
A
dentin- inside
15
Q
attaches base/ root to socket
A
cementum
-may extend around enamel in herbivores
16
Q
cementocytes lay down matrix in seasonal cycles
A
cemental annuli
17
Q
bundles of thick collagenous fibers
A
periodontal ligament
18
Q
most mammals have what type of teeth
A
heterodont
19
Q
teeth continuously replaced
A
Polyphyodont
20
Q
two sets of teeth
-mammals
A
diphyodont
21
Q
baby or milk teeth
A
deciduous dentition
22
Q
adult teeth
A
permanent dentition
23
Q
enamel organ
A
epidermis
24
Q
dermal papilla
A
mesenchyme
25
secrete enamel
Ameloblasts
26
secrete dentin
Odontoblasts
27
tooth development
1. crown
2. root
3. cementum
4. periodontal ligament
28
with sockets
Thecodont
29
shallow socket
Acrodont
30
connected on mesial side of jaw
Pleurodont
31
allows teeth to bend inwards so prey cant escape
serrae
32
some snakes with hollow that allows for venom and can be replaced
polyphyodont
33
crowns low
Brachydont
34
crows high
Hypsodont
35
rounded cusps
| -us
Bunodont
36
cusps drawn into ridges
Lophodont
37
cresent shaped cusps
selenodont
38
type of sectorial teeth that cats and dogs have
carnassials
39
tongue is opperated by
hyoid apparatus
40
the toungue is reduced in what
secondarily aquatic species
41
forms from endoderm
pharynx
42
form on lateral walls
pharyngeal pouches
43
meet inpocketing of ectoderm
branchial grooves
44
form partition at point of contact
| -perforated to form gill slits
closing plates
45
mammals tusks evolved from what?
elephant- upper incisors
Narwhal-left upper incisor
walrus- canines
46
tongue forms floor of pharynx with keratinized teeth
hagfish and lampreys
47
tongue forms from floor of pharynx, not muscularized
fish
48
tongue forms from hypobranchial musculature and opperated by hyoid apparatus
tetrapods
49
move food in mouth, needs wet adhesion
intraoral transport
50
tubotympanic recess envelops ear bones
1st pharyngeal pouch
51
forms eustachian tube and part of tympanic cavity
1st pharyngeal pouch
52
palatine tonsil
2nd
53
parathyroid
3rd and 4th
54
ultimobranchial bodies- separate glands in most, part of thyroid in mammals
5th
55
form c cells and control blood calium
5th
56
all arches in fished. variable in amphibians, III and IV in mammals
Thymus
57
roof of pharynx
pharyngeal tonsil
58
thyroid, part of tongue, lingual tonsil and lung primordium
floor
59
three temporary seals form when a mamml is chewing
anterior-lips
middle-between soft palate and tongue
posterior- between epiglotis and soft palate
60
when tongue expands against soft palate
swallowing
61
where does food gather when swallowing
vallecula
62
closes to prevent aspiration of food into trachea
glottis
63
helps us with swalloing without blocking air
posterior seal
64
most digestion occurs here
alimentary canal
65
epithelium that lines the lumen
mucosa
66
loose connective tissue
| -nerve plexes
submucosa
67
circular and logitudinnal smooth muscle
muscularis externa
68
together with mesentery
serosa
69
may store food-prey swallowed whole
esophagus
70
retard putrefaction by bacteria
Hydrochloric acid
71
folds when relaxed
rugae
72
produces mucas
cardiac glands
73
mucas partially for neutrulization- this burns
pyloric glands
74
produce hydrochloric and digestive enzymes
fundus glands
75
mammals fundic glands
cheif and parietal cells
76
oxyntopeptic cells
HCl and Pepsinogen
77
loss of gastric glands in rodents
nonglandular epithelium
78
sphincter regulate movement into the large intestine
ileocolic valve
79
terminal section receive products from urinary or reproductive systems
cloaca
80
only products of the alimentary canal
rectum
81
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function is to move food
absorb products of digestion, water
```
intestine
82
neutralize chyme
duodenal or brunners gland
83
have no stomach, and no straight gut that folds in lumen
hagfishes and lampreys
84
diet of detritus
coprolites
85
suggest scroll valve
coiled (absorptive area)
86
have a spiral valve intestine
chondrichthyes
87
have no stomach
chimaeras
88
some carnivores teleosts have this, it aids in digestion and food absorption
pyloric caecae
89
where divisions of small intestine become clear
amphibians
90
have well muscularized gizzard and a glandular region
crocodilians
91
diverticulum of esophagus that hole food and crop milk in pigeons
crop
92
glandular stomach
proventriculus
93
stomach
abomasum
94
becomes venom gland in many snakes
duvernoys gland
95
bathe eye and vomeronasal orcan
lacramal and harderian gland
96
2nd largest organ in humans
liver
97
emulsify fats
bile
98
Islets of Langerhans
Endocrine
99
Pancreatic ice
Exocrine
100
shuts down the production of acid
PGE2
