structure And Function Of The Cardio-repiratory System

Question 1

What is the primary function of the respiratory system?

Answer 1

To facilitate the exchange of oxygen and carbon dioxide.

Question 2

True or False: The diaphragm contracts during inhalation.

Answer 2

True

Question 3

Fill in the blank: The __________ are the small air sacs in the lungs where gas exchange occurs.

Answer 3

alveoli

Question 4

What is the role of red blood cells?

Answer 4

To transport oxygen from the lungs to the body and carbon dioxide from the body to the lungs.

Question 5

Multiple Choice: Which blood vessel carries oxygenated blood away from the heart?

Answer 5

Aorta

Question 6

What is the function of valves in the heart?

Answer 6

To prevent the backflow of blood.

Question 7

True or False: The right atrium receives oxygenated blood from the body.

Answer 7

False

Question 8

What are the two main types of blood vessels?

Answer 8

Arteries and veins.

Question 9

Fill in the blank: The __________ is the chamber of the heart that pumps blood to the lungs.

Answer 9

right ventricle

Question 10

What is the average resting heart rate for a healthy adult?

Answer 10

60 to 100 beats per minute.

Question 11

Multiple Choice: Which part of the heart is responsible for pumping oxygenated blood to the body?

Answer 11

Left ventricle

Question 12

True or False: Veins have thicker walls than arteries.

Answer 12

False

Question 13

What is the term for the phase of the heartbeat when the heart muscle relaxes?

Answer 13

Diastole

Question 14

Fill in the blank: Blood that is rich in oxygen is called __________ blood.

Answer 14

oxygenated

Question 15

What is the primary gas exchanged in the lungs during respiration?

Answer 15

Oxygen

Question 16

True or False: The pulmonary artery carries deoxygenated blood to the lungs.

Answer 16

True

Question 17

What is the main purpose of capillaries?

Answer 17

To allow for the exchange of substances between blood and tissues.

Question 18

Fill in the blank: The __________ is the largest artery in the body.

Answer 18

aorta

Question 19

What is the name of the process by which oxygen is transported from the lungs to the body’s tissues?

Answer 19

Oxygen transport

Question 20

Multiple Choice: What is the function of the septum in the heart?

Answer 20

To separate the left and right sides of the heart.

Question 21

True or False: The heart has four chambers.

Answer 21

True

Question 22

What is the main function of the circulatory system?

Answer 22

To transport nutrients, gases, hormones, and waste products throughout the body.

Question 23

Fill in the blank: The __________ returns blood from the upper body to the heart.

Answer 23

superior vena cava

Question 24

What is the term for the volume of blood pumped by the heart in one minute?

Answer 24

Cardiac output

Question 25

Multiple Choice: Which type of blood vessel carries blood back to the heart?

Answer 25

Veins

Question 26

True or False: Oxygen diffuses from the blood into the alveoli during gas exchange.

Answer 26

False

Question 27

What happens to the diaphragm during exhalation?

Answer 27

It relaxes and moves upward.

Question 28

What is the primary function of the respiratory system?

Answer 28

To facilitate the exchange of gases, primarily oxygen and carbon dioxide.

Question 29

True or False: The pathway of air begins at the nose or mouth.

Answer 29

True

Question 30

Fill in the blank: The __________ are tiny air sacs in the lungs where gas exchange occurs.

Answer 30

alveoli

Question 31

What is the role of the diaphragm in breathing?

Answer 31

The diaphragm contracts to create a vacuum that draws air into the lungs.

Question 32

Multiple Choice: Which gas is primarily inhaled during respiration? A) Carbon Dioxide B) Nitrogen C) Oxygen D) Argon

Answer 32

C) Oxygen

Question 33

What process describes the movement of oxygen from the alveoli into the blood?

Answer 33

Diffusion

Question 34

True or False: Carbon dioxide is transported back to the lungs primarily in red blood cells.

Answer 34

True

Question 35

Fill in the blank: The __________ is the tube that carries air to the lungs.

Answer 35

trachea

Question 36

What is the term for the total volume of air that can be inhaled and exhaled in one breath?

Answer 36

Tidal volume