Tests

Question 1

what are the smallest blood vessels?

Answer 1

capillaries

Question 2

Blood enters the left atrium of the heart via the..?

Answer 2

Pulmonary vein

Question 3

after leaving the left ventricle, blood flows to the cells of the body via the..?

Answer 3

aorta

Question 4

oxygen is transported in the bloodstream primarily by the..?

Answer 4

red blood cells

Question 5

the structure that covers the trachea then swallowing to prevent choking is the..?

Answer 5

epiglottis

Question 6

what is the term for the ball of food that the tongue creates and pushes through the esophagus?

Answer 6

bolus

Question 7

what does amylase break down and where?

Answer 7

carbs in the mouth

Question 8

in humans, inhalation occurs by means of which of the following actions?

Answer 8

contraction of the diaphragm and the intercostal muscles

Question 9

which are the two major sources of energy for the human body?

Answer 9

carbs and proteins

Question 10

muscle below lungs

Answer 10

diaphragm

Question 11

breaks down proteins

Answer 11

pepsin

Question 12

where chemical digestion of carbs begins

Answer 12

mouth

Question 13

helps fight disease

Answer 13

white blood cells

Question 14

where HCI is found

Answer 14

stomach

Question 15

carries oxygenated blood

Answer 15

red blood cells

Question 16

structure in respiratory system made of rings of cartilage

Answer 16

trachea

Question 17

the first chamber to receive oxygenated blood

Answer 17

left atrium

Question 18

the structure where gas exchange occurs

Answer 18

alveoli

Question 19

the first chamber to receive de-oxygenated blood

Answer 19

right atrium