bio chap 14 Flashcards


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1

the layer of the GI tract that is responsible for motility is the?

muscularis layer

2

the process by which undigested material is removed from the gastrointestinal tract is?

defecation

3

the process by which food is propelled through the digestive tract by alternating contraction and relaxation of smooth muscle is?

peristalsis

4

muscular movements that mix food in the lumen of the small intestine is referred to as?

segmentation

5

once a bolus of food has been formed in the mouth, it is passed by the tongue and jaws to the?

pharynx

6

the __________is the region of a tooth that lies below the gum line, and the entire tooth sets in a socket in the jawbone, lined with___________

root, periodontal membrane

7

the salivary glands include?

three glands called, parotid glands, smaller sublingual glands, and submanddibular glands.

8

during swallowing the epiglottis?

it covers the opening of the larynx during swallowing.

9

mucin is saliva. functions to?

mucin is a mucus like protein that holds food particles together so they can be swallowed more easily.

10

gastric juice in the stomach is composed of?

HCI, pepsinogen And fluid that is secreted into the glands

11

gurgling of the stomach is due to?

peristalsis contraction

12

pepsin is a digestive enzyme that specifically targets?

connective tissue in food and digests proteins and peptides into amino acids so they can be absorbed in the small intestine.

13

bile is produced by the ______and stored in the _____________

liver, gallbladder.

14

the watery mixture of partially digested food produced in the stomach is called?

chyme

15

the pancreatic ducts connect to the small intestine at the...

bile ducts

16

in the small intestine, amino acids and monosaccharides are moved into the mucosal cells by the process of?

absorption

17

the pancreas aids in the chemical digestion of food by?

secreting proteases, pancreatic amylase, lipase and sodium bicarbonate which neutralizes the stomach acid.

18

nutrient rich blood moves from the small intestine to the liver via?

hepatic portal vein

19

an eating disorder in which someone diets excessively or deliberately stops eating all together is called?

anorexia nervosa

20

as chime leaves the stomach, the acidic nature of the partially digested food stimulates the pancreas to release the signaling molecule called?

water and biocarbonate

21

elimination of undigested food material, from the large intestine is controlled by?

neural reflex

22

what vitamin can be produced by the human body?

vitamin D

23

water-soluable vitamins differ from fat-soluable vitamins in that water souble vitamins are?

absorbed more readily than fat- soluble vitamins but they only store briefly. and rapidly excreted in urine. so we need these on a daily basis.

24

what results in a higher metabolic rate?

losing weight. metabolize calories faster ????

25

a disorder of the nervous system in which the individual eats and then deliberately vomits is?

bulimia nervosa

26

trypsin is a digestive enzyme produced by the pancreas to facilitate the chemical breakdown of?

proteins