Circulatory, Respiratory, and Digestive Systems

Question 1

What is the function of the Circulatory System?

Answer 1

transport nutrients and oxygen to cells

Question 2

What do the arteries do?

Answer 2

carry blood AWAY from the heart

Question 3

What do the capillaries do?

Answer 3

substances are exchanged between blood and body

Question 4

What do veins do?

Answer 4

carry blood BACK to the heart

Question 5

What colors does blood change when circulating through the body?

Answer 5

O2 rich: bright red
O2 poor: dark red

Question 6

What is plasma?

Answer 6

It is made of mostly water

Question 7

What are white blood cells part of?

Answer 7

the immune system

Question 8

what do plantlets do?

Answer 8

helps blood clots form

Question 9

what do red blood cells do?

Answer 9

carry oxygen

Question 10

What does the aorta do?

Answer 10

pumps blood to all of the body

Question 11

What is the function of the respiratory system?

Answer 11

supply oxygen (o2)

remove carbon dioxide (co2 waste product)

Question 12

Where does the gas exchange happen?

Answer 12

between the alveoli and the capillaries

Question 13

What happens in the nose?

Answer 13

inhaled air is cleaned, warmed, and moistened

Question 14

What is the pharynx?

Answer 14

a passage for both food and air

Question 15

what is the epiglottis?

Answer 15

flap closing over larynx to keep food + water out

Question 16

what is the larynx

Answer 16

the voice box

Question 17

what is the trachea?

Answer 17

the windpipe

Question 18

what is the diaphragm?

Answer 18

contracts + relaxes to intake o2 and release co2

Question 19

What is the function of the digestive system?

Answer 19

break down food to extract nutrients for cell use

Question 20

What is mechanical digestion?

Answer 20

physical change
-food physically broken down

Question 21

What is chemical digestion?

Answer 21

chemical change
-always cause a chemical change!
-new substance

Question 22

Where does digestion begin?

Answer 22

in the mouth
-saliva chemically digests food w/ enzymes

Question 23

what is peristalsis?

Answer 23

food being pushed down to the stomach by muscular contractions

Question 24

What is the mechanical digestion in the stomach?

Answer 24

• stomach muscles churn food
• food is mixed and broken up

Question 25

What is the chemical digestion in the stomach?

Answer 25

-stomach acid
- enzymes break down complex proteins to amino acids

Question 26

What creates bile?

Answer 26

the liver

Question 27

Is bile physical or chemical change?

Answer 27

physical change

Question 28

Are enzymes physical or chemical change?

Answer 28

chemical change

Question 29

Where does absorption happen?

Answer 29

by the villi in the small intestine

Question 30

What happens in the elimination step of the digestive system?

Answer 30

water is absorbed + removed from undigested food

Question 31

What are the steps of digestion in the small intestine?

Answer 31

1. mechanical digestion
2. chemical digestion
3. absorption
4. elimination