Ch 25 Lec 2 - Digestive System Flashcards Preview

Anatomy > Ch 25 Lec 2 - Digestive System > Flashcards

Flashcards in Ch 25 Lec 2 - Digestive System Deck (48):
0

mechanical breakdown by teeth

mastication

1

cutting teeth

incisors

2

tearing teeth

cuspids

3

crushing and grinding teeth

bicuspids and molars

4

exposed region of tooth covered in enamel

crown

5

base within host bone of tooth

root

6

boundary between root and crown of tooth

neck

7

gums are blank

gingiva

8

hardest substance in body made of calcium salts

enamel

9

inner mineral matrix of tooth

dentin

10

bone like material covering root of tooth

cementum

11

this ligament anchors tooth

periodontal

12

spongy area with vessels and known as the root canal

pulp cavity

13

primary teeth are replaced with blank teeth

deciduous

14

there are blank primary or deciduous teeth

20

15

secondary or permanent teeth have blank bicuspids and blank molars

2, 3

16

there are blank total secondary or permanent teeth

32

17

movement through the pharynx is enabled by blank

swallowing

18

swallowing is known as blank

deglutition

19

there are blank stages of swallowing

3

20

stage of swallowing that compresses bolus against hard palate, elevates soft palate, and tongue retracts

buccal phase

21

passageway for food to stomach

esophagus

22

esophagus penetrates diaphragm through esophageal blank

hiatus

23

three layers of esophagus

mucosa, muscularis, adventitia

24

layer of esophagus that is stratified squamous

mucosa

25

this is for storage and mechanical breakdown and chemical breakdown of protein

stomach

26

stomach delivers blank to small intestine

chyme

27

there is little absorption of nutrients in the blank

stomach

28

stomach shape has a lesser and greater blank

curvature

29

region of stomach that meets esophagus

cardia

30

mucosa of stomach is folded into blank for expansion during a full stomach

rugae

31

three muscle layers are in the blank of stomach

muscularis

32

outer layer of stomach

longitudinal

33

middle layer of muscularis of stomach

circular

34

inner layer of muscularis of stomach

oblique

35

these make gastric juice and secrete them

gastric glands

36

secretory cell in stomach that makes HCl and intrinsic factor

parietal cells

37

secretory cell of stomach that makes pepsinogen

chief cells

38

this breaks down proteins

pepsinogens

39

secretory cells that secrete the hormone gastrin

enteroendocrine cells

40

three regions of small intestine

duodenum, jejenum, ileum

41

shortest length of small intestine

25 cm

42

longest part of small intestine

ileum

43

this completes digestion of chyme and receives secretions from pancreas and liver

small intestine

44

three parts of small intestine to increase surface area

plicae circulares, intestinal villi, microvilli

45

folds in lining of small intestine

plicae circulares

46

fingerlike projections of mucosa in small intestine

intestinal villi

47

fingerlike extensions of cell membranes in small intestines

microvilli