Respiratory and Circulatory Systems Review

Question 0

Breathing begins as the __________ at the base of the lungs contracts, pulling down on your lungs and drawing in _____.

Answer 0

diaphragm

air

Question 1

________ is the process of breathing oxygen for your body’s use and getting rid of your body’s waste gases.

Answer 1

Respiration

Question 2

Air is warmed, cleaned and moistened as it passes the tiny hairs and mucous of the _________ __________.

Answer 2

nasal passage

Question 3

The throat or ________ is the part of the airway that turns down behind your mouth to your lungs.

Answer 3

pharynx

Question 4

The ____________ is not the wind pipe, but the food tube behind it that leads to the stomach.

Answer 4

esophagus

Question 5

The voice box or _________ is part that produces speech as its muscles are vibrated by air from your lungs.

Answer 5

larynx

Question 6

The __________ is the wind pipe to the lungs.

Answer 6

trachea

Question 7

The wind pipe separates into the two lungs through ________.

Answer 7

bronchi

Question 8

The air tubes inside your lungs that branch off again and again becoming smaller and smaller are called _____________.

Answer 8

bronchioles

Question 9

The grape-like clusters of air sacs at the tips of these branching air tubes are called __________.

Answer 9

alveoli

Question 10

In the alveoli _____________ passes into tiny blood vessels for the body’s use, and ____________ _____________ is received through these tiny vessels as waste from the body to be exhaled.

Answer 10

oxygen

carbon dioxide

Question 11

After the blood receives its necessary gas from the alveoli, it flows through the _____________ _______ to the _________ to be pumped to all the body.

Answer 11

pulmonary vein

heart

Question 12

Fresh blood from the lungs enters the heart at the left-side upper chamber called the _____ ________.

Answer 12

left atrium

Question 13

The first heart beat pushes blood down from this upper chamber to the lower left-side chamber called the _________ _____________.

Answer 13

left ventricle

Question 14

The second beat pushes the blood from the left ventricle (lower chamber) up and out of the heart to the _______.

Answer 14

body

Question 15

_________ keep the blood from returning back to the upper chamber of the heart on the second beat.

Answer 15

Valves

Question 16

The large vessel that carries blood as it leaves the heart is the ________, and the vessels that branch off from it to carry blood from the heart to every part of the body are called _________.

Answer 16

aorta

arteries

Question 17

The blood vessels from the heart (arteries) branch off again and again, becoming smaller and smaller, until they become networks of microscopic, thin-walled blood vessels called _______________ that allow nutrients carried by the blood to pass through to every muscle, organ, brain, bone, and skin cell of the body.

Answer 17

capillaries

Question 18

As nutrients and oxygen are dropped off at the individual cells by these tiny networks of blood vessels, wastes and the gas _________ _________ are picked up by them to be returned to the lungs.

Answer 18

carbon dioxide

Question 19

The tiniest of blood vessels connect to vessels called ______ that gradually become larger and larger as they join others like themselves returning to the heart and lungs to get rid of the waste gas.

Answer 19

veins

Question 20

Upon reaching the heart the blood enters the heart through the largest returning blood vessel called the _______ ________ and enters the top right chamber of the heart called the ________ ___________.

Answer 20

vena cava

right atrium

Question 21

The first beat of the heart pushes the blood from the upper right chamber to the lower right chamber called the ________ ____________.

Answer 21

right ventricle

Question 22

Once again ________ keep the blood from flowing back to the upper chamber on the heart’s second beat.

Answer 22

valves

Question 23

On the second beat blood is pumped out of the heart through the __________ ___________ to the air sacs of the _______ called __________ to drop off the waste gas carbon dioxide and pick up oxygen. The process has started all over again. Amazing!

Answer 23

pulmonary artery
lungs
alveoli

Question 24

Blood is composed of ______, ________, and ___________ cells, as well as the straw-colored liquid called _________ in which these swim.

Answer 24

red white platelet plasma

Question 25

_______ blood cells fight diseases.

Answer 25

White

Question 26

______ blood cells carry oxygen and carbon dioxide.

Answer 26

Red

Question 27

__________ blood cells help plug up cuts on the skin.

Answer 27

Platelet

Question 28

The __________ is the part of the blood that is watery and carries digested food.

Answer 28

plasma

Question 29

_____________ blood is bright red while _____________ blood is purplish.

Answer 29

Oxygen-rich | carbon dioxide rich

Question 30

There is a strong pulse in blood vessels called _________ but not in ones called _______.

Answer 30

arteries | veins

Question 31

Why do the circulatory system and respiratory system need each other?

Answer 31

The circulatory system needs the respiratory system to get oxygen and get rid of carbon dioxide. Respiratory needs circulatory to carry oxygen to the body and pick up carbon dioxide from the body.