Chapter 4: Human body systems

Question 1

artery

Answer 1

a blood vessel that carries blood away from the heart to other parts of the body

Question 2

capillary

Answer 2

the smallest kind of blood vessel

Question 3

vein

Answer 3

a blood vessel that carries blood toward the heart

Question 4

trachea

Answer 4

the tube that carries air from the larynx to the lungs

Question 5

bronchiole

Answer 5

a small tube in the lungs that carries air to air sacs

Question 6

air sacs

Answer 6

the thin-walled sacs in the lung where oxygen enters the blood and carbon dioxide leaves the blood

Question 7

digestion

Answer 7

the process that changes food into a form that the body can use

Question 8

esophagus

Answer 8

the tube that carries food from the mouth to the stomach

Question 9

small intestine

Answer 9

a narrow, winding tube where food is changed chemically and broken down into small particles that can be absorbed into the blood

Question 10

large intestine

Answer 10

a wider tube connected to the small intestine that removes water from undigested food and stores this waste until it is removed from the body

Question 11

bladder

Answer 11

the sac that collects and stores urine formed by the kidneys