Chapter 30: Digestive & Excretory System

Question 1

What is mechanical digestion?

Answer 1

physical breakdown of large pieces of food into smaller pieces

Question 2

What is chemical digestion?

Answer 2

enzyme break down food into small molecules the body can use

Question 3

What is absorption?

Answer 3

when food is taken up into the bloodstream and used by cells

Question 4

What is ingestion?

Answer 4

process of putting something into the mouth

Question 5

What is elimination?

Answer 5

elimination of substances that can’t be digested or absorbed

Question 6

What is the function of salivary analase?

Answer 6

break down starches into disaccharides

Question 7

What is the esophagus?

Answer 7

tube leading to stomach

Question 8

What is the stomach?

Answer 8

muscular sac that continues digestion

Question 9

What is the function of the small intestine?

Answer 9

where most of the digestion and absorption occurs

Question 10

What is the function of the large intestine?

Answer 10

remove water from material

Question 11

What is the villi?

Answer 11

finger-like projections responsible for absorption

Question 12

What is excretion?

Answer 12

process in which waste is eliminated to maintain homeostasis

Question 13

What is skin excretion?

Answer 13

excretes excess water, salts, and urea

Question 14

What is lung excretion?

Answer 14

excretes carbon dioxide from the body by exhaling

Question 15

What is liver excretion?

Answer 15

breaks down nitrogen waste and unclamps fats into manageable droplets

Question 16

What is kidney excretion?

Answer 16

removes excess water an d metabolic waste creating urine