the digestive system

Question 1

digestive system is responsible for

Answer 1

ingestion
digestion
absorption
egestion

Question 2

the mouth provides mechanical:

Answer 2

digestion

food is physically broken down

Question 3

three major nutrients that must be broken down into smaller molecules before the body can use them

Answer 3

carbohydrates, fats, proteins

Question 4

chemical digestion uses chemicals such as

Answer 4

enzymes and digestive juices

Question 5

the salivary glands produce

Answer 5

saliva

Question 6

saliva contains

Answer 6

water, mucin, salivary amylase

Question 7

water does what for the digestive system

Answer 7

moistens the food by dissolving it

Question 8

mucin does what in the digestive system

Answer 8

lubricates the food for passage through the tract

Question 9

what does the salivary amylase do for the digestive system

Answer 9

it’s an enzyme that begins the breakdown of starch into maltose

Question 10

the esophagus is a muscular tube connecting your mouth to

Answer 10

your stomach

Question 11

how does the esophagus work

Answer 11

smooth muscle tissue contracting and relaxing, moving partially digested food along

Question 12

peristalsis: rhythmic, involuntary contraction of smooth muscle throughout

Answer 12

the digestive tract (esophagus)

Question 13

is peristalsis voluntary or involuntary

Answer 13

involuntary

Question 14

the stomachs lining has cells that produce

Answer 14

digestive juices and enzymes

Question 15

contracting and relaxing stomach muscles, aka churning, is a form of

Answer 15

mechanical digestion

Question 16

the epithelial cells from the stomach secrete

Answer 16

hydrochloride acid, which converts pepsinogen into pepsin

Question 17

pepsinogen (stomach):

Answer 17

inactive enzyme

Question 18

pepsin (stomach) starts

Answer 18

protein digestion

Question 19

stomach: HCl kills bacteria to keep acid levels

Answer 19

high in the stomach

Question 20

(stomach) chyme: liquidlike paste entering

Answer 20

small intestine

Question 21

small intestines: kinda digested food leaves stomach, enters

Answer 21

first part of intestine: duodenum to be digested mechanically and chemically

Question 22

small intestines: liver secretes bile, which breaks up

Answer 22

fat into small droplets

Question 23

small intestines: pancreas secretes enzymes which break down

Answer 23

carbohydrates, fats, proteins

Question 24

small intestines accessory organs

Answer 24

liver and pancreas

Question 25

several enzymes decrease into small intestines to complete

Answer 25

chemical digestion (amylase, protease, lipase)

Question 26

(small intestine) amylase: breaks down carbohydrates into

Answer 26

glucose

Question 27

small intestines: protease breaks down proteins into

Answer 27

amino acids

Question 28

small intestines: lipase breaks down fats into

Answer 28

fatty acids

Question 29

the absorption of vitamins, minerals and small molecules of fats, carbohydrates, proteins into bloodstream take place

Answer 29

in the 2nd and 3rd portions of the small intestine

Question 30

small intestines: villi are millions of inner folds that maximize surface area where

Answer 30

nutrients and water can be absorbed into bloodstream

Question 31

inner folds inside small intestine:

Answer 31

villi

Question 32

large intestine: where

Answer 32

indigestes food goes

Question 33

water and electrolytes are absorbed in the

Answer 33

large intestine

Question 34

large intestine: the rectum is at the

Answer 34

end, holds waste products of digestion until they go thru anus

Question 35

what is ingestion

Answer 35

taking in food

Question 36

what is absorption

Answer 36

diffusion of nutrients

Question 37

what is digestion

Answer 37

breaking food down

Question 38

what is egestion

Answer 38

removing remaining food

Question 39

first section of the small intestine

Answer 39

duodenum