Ch. 3 Cardiorespiratory System

Question 0

the space in the chest between the lungs that contains all the internal organs of the chest except the lungs

Answer 0

Mediastinum

Question 1

a hollow muscular organ that pumps a circulation of blood through the body by means of rhythmic contraction

Answer 1

Heart

Question 2

a specialized area of cardiac tissue, located in the right atrium of the heart which initiates the electrical impulses that determine the heart rate; often termed the pacemaker for the heart

Answer 2

sinoatrial (SA) node

Question 3

a small mass of specialized cardiac muscle fibers located in the wall of the right atrium of the heart that receives heartbeat impulses from the SA node and directs them to the walls of the ventricles

Answer 3

Atrioventricular node

Question 4

the superior chamber of the heart that receives blood from the veins and forces it into the ventricles

Answer 4

Atrium

Question 5

the inferior chamber of the heart that receives blood from its corresponding atrium and in turn forces blood into the arteries

Answer 5

Ventricle

Question 6

the amount of blood pumped out of the heart with each contraction

Answer 6

stroke volume

Question 7

the rate at which the heart pumps

Answer 7

Heart rate

Question 8

heart rate * stroke volume (overall performance of the heart)

Answer 8

cardiac output (Q)

Question 9

fluid that circulates in the heart, arteries, capillaries, and veins carries nutrients and oxygen to all parts of the body and also rids the body of waste products

Answer 9

Blood

Question 10

network of hollow tubes that circulates blood throughout the body

Answer 10

blood vessels

Question 11

vessels that transport blood away from the heart

Answer 11

Arteries

Question 12

the smallest blood vessels and the site of exchange of chemicals and water between the blood and the tissues

Answer 12

capillaries

Question 13

a system of organs (the lungs and respiratory passageways) that collect oxygen from the external environment and transports it to the bloodstream

Answer 13

respiratory system

Question 14

is composed of skeletal structures (bones) and soft tissues (muscles) that work together to allow proper respiratory mechanics to occur and help pump blood back to the heart during inspiration

Answer 14

respiratory pump

Question 15

the process of actively contracting the inspiratory muscles to move air into the body. AKA Inhalation

Answer 15

inspiration

Question 16

the process of actively or passively relaxing the inspiratory muscles to move air out of the body. AKA Exhalation

Answer 16

expiration

Question 17

the process of getting oxygen from the environment to the tissues of the body

Answer 17

diffusion

Question 18

the highest rate of oxygen transport and utilization acheived at maximal physical exertion

Answer 18

Maximal oxygen consumption (VO2 max)

Question 19

System comprised of the cardiovacular and respiratory systems

Answer 19

Cardiorespiratory System

Question 20

A system of the body composed of the heart, blood, and blood vessels.

Answer 20

Cardiovascular System

Question 21

Vessels that transport blood toward the heart

Answer 21

Veins

Question 22

Small terminal branches of an artery which end in capillaries

Answer 22

Arterioles

Question 23

The very small veins that connect capillaries to the larger veins

Answer 23

Venules