Digestive System

Question 1

Ingestion

Answer 1

get food into digestive tract

Question 2

digestion

Answer 2

physical and chemical breakdown of food

Question 3

absorption

Answer 3

nutrients enter the cells of digestive tract and move to the blood

Question 4

elimination

Answer 4

expel undigested food as feces

Question 5

physical digestion

Answer 5

break food down into lots of small portions

Question 6

chemical digestion

Answer 6

break large molecules into chemical building blocks

Question 7

which digestion requires enzymes?

Answer 7

chemical

Question 8

how is food moved down the digestion tract?

Answer 8

peristalsis

Question 9

mouth

Answer 9

ingestion of food begins physical and chemical digestion

Question 10

salivary glands

Answer 10

taste triggers salivary glands and produces saliva. moistens foods. contains amylase.

Question 11

esophagus

Answer 11

muscular tube leading to the stomach

Question 12

stomach

Answer 12

continue the physical and chemical digestion of food through churning

Question 13

small intestines

Answer 13

completes digestion and absorbs nutrients

Question 14

large intestines

Answer 14

remainder of food goes into large intestines

Question 15

why does the stomach not digest itself?

Answer 15

only produces acid when food is present. mucous cells.

Question 16

villi

Answer 16

finger like projections of epithelial cells that absorb nutrients. lining of small intestines.

Question 17

microvilli

Answer 17

increase surface area. extension of cell membrane

Question 18

pancreas

Answer 18

produces many digestive enzymes breakdown many macromolecules empties into duodenum

Question 19

liver

Answer 19

produces bile and stores glycogen

Question 20

gallbladder

Answer 20

stores bile produced by liver

Question 21

why is bile necessary for fat digestion?

Answer 21

Breaks down fats into fatty acids so that they can be absorbed into your body through your digestive tract.