Chapter 15-1 Flashcards Preview

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Flashcards in Chapter 15-1 Deck (30):
0

Name four layers of the alimentary wall canal

Mucosa
Submucosa
Muscular
Serous

1

Name the movements of the alimentary canal

Mixing movements
Peristalsis

2

Propelling movements in a wavelike motion

Peristalsis

3

Tongues role is digestive process

Mixes food with saliva and moves food toward pharynx during swallowing

4

Name the 3 tonsils

Lingual tonsils
Palatine tonsils
Pharyngeal tonsils

5

Consists of hard anterior part and soft posterior part

Palate

6

Soft projection that closes opening to nasal cavity during swallowing

Uvula

7

Name the four teeth and their functions

Incisors-biting
Canines-tear food
Bicuspids-cut and chew
Molars-grind food

8

Hardest substance in body which covers crown

Enamel

9

Hard bonelike material that forms bulk of tooth

Dentin

10

Contains blood vessels, nerves, and connective tissue

Pulp cavity

11

Thin layer of bone like material that encloses root

Cementum

12

Surrounds cementum and attaches tooth to jaw

Periodontal ligament

13

Two main salivary secretions

Amylase
Mucus

14

Digestive enzyme that digests starch

Amylase

15

3 majors salivary glands

Parotid glands
Submandibular glands
Sublingual glands

16

Name 3 parts of the pharynx

nasopharynx
Oropharynx
Laryngopharnx

17

Describe the swallowing mechanism

Food is mixed w saliva and forced into pharynx
Involuntary reflex actions move food into the esophagus

18

Food passageway from pharynx to stomach

Esophagus

19

Circular muscle at end of pyloric canal that controls gastric emptying

Pyloric sphincter

20

Folds on stomachs inner lining

Rugae

21

3 gastric secretions and what they produce

Mucous cells produce mucus
Chief cells produce pepsin
Parietal cells produce HCL and intrinsic factor

22

Name 3 phases of regulation of gastric secretion

Cephalic phase-sight, odor, or thought of food will start activity of gastric glands
Gastric phase-when food enters stomach, cells stimulate to produce gastrin which stimulate gastric juice production
Intestinal phase-begins with stimulus in intestine tract which causes a decrease in secretion of gastric juice

23

Why can't you absorb meal through stomach wall

Food hasn't been digested enough to pass through stomach membrane

24

What can get through stomach lining

Stomach can absorb water, glucose, salt, alcohol, and aspirin

25

Semi fluid paste of food particles and gastric juice

Chyme

26

Rate of emptying depends on what

Fluidity of chyme
Type of food

27

Which kinds of food empty the quickest? Slowest?

Fastest-carbs
Slowest-fatty foods

28

What do ulcers eat away at

The mucus membrane

29

Hernia

Esophagus tube gets bigger and the gastric juices go up the tube and to the thoracic region and can cause heart burn