Cardiovascular system

Question 1

The overall system responsible for circulating blood throughout the body, which includes the heart and blood vessels

Answer 1

Cardiovascular system

Question 2

found in all vertebrates and some invertebrates, circulates blood unidirectionally from the heart, around the body, and back to the heart.

Answer 2

closed circulatory system

Question 3

found in arthropods, pumps blood into a cavity called a hemocoel where it surrounds the organs and then returns to the heart(s) through ostia (openings).

Answer 3

open circulatory system

Question 4

The blood found in arthropods, a mix of blood and interstitial fluid, is called ____

Answer 4

hemolymph

Question 5

The heart has four chambers: ____ and ____.

Answer 5

two atria (upper chambers), two ventricles (lower chambers)

Question 6

The right and left sides of the heart are separated by the.

Answer 6

atrioventricular (AV) septum

Question 7

The heart has ____ that prevent blood from flowing in the wrong direction

Answer 7

four valves

Question 8

Located between the right atrium and right ventricle

Answer 8

Tricuspid valve

Question 9

Located between the right ventricle and the pulmonary artery

Answer 9

Pulmonary valve

Question 10

Located between the left atrium and left ventricle

Answer 10

Mitral valve

Question 11

Located between the left ventricle and the aorta

Answer 11

Aortic valve

Question 12

Also known as the “atrial kick”, this atrial contraction ensures that the ventricles are full before the next contraction

Answer 12

Atrial systole

Question 13

The ventricle contracts, expelling blood outside of the ventricles

Answer 13

Ventricular systole

Question 14

The atria and ventricles relax, and the atrioventricular valves are open

Answer 14

Ventricular diastole

Question 15

Left ventricular pressure rises above atrial pressure, closing the mitral valve and producing the first heart sound.

Answer 15

Isovolumic contraction

Question 16

The ventricular pressure forces the semilunar valves open, pushing blood into the arteries.

Answer 16

Ventricular ejection

Question 17

form a closed vascular system that transports blood to the tissues and back to the heart

Answer 17

Blood vessels

Question 18

Vessels that carry blood away from the heart

Answer 18

Arteries

Question 19

Vessels that play a role in exchanges between tissues and blood

Answer 19

Capillary beds

Question 20

Vessels that return blood toward the heart

Answer 20

Veins

Question 21

have a heavier, stronger, stretchier tunica media than veins to withstand changes in pressure

Answer 21

Arteries

Question 22

have a thinner tunica media than arteries and operate under low pressure

Answer 22

Veins

Question 23

Only one cell layer thick (tunica intima)
Allow for exchanges between blood and tissue

Answer 23

Capillaries

Question 24

is a muscular organ that pumps blood continuously throughout the body. It is comprised of four chambers — the right and left atrium and the right and left ventricle

Answer 24

heart

Question 25

the heart uses an ____to trigger a heartbeat, it is the power source that makes all the heart’s functions possible

Answer 25

electrical system

Question 26

lead in and out of the chambers, which receive and distribute blood throughout the body

Answer 26

Blood vessels

Question 27

The four chambers of the heart are connected by four valves — the ____

Answer 27

tricuspid, pulmonic, mitral and aortic valves

Question 28

As the heart beats, it pumps blood through a system of blood vessels called the ____

Answer 28

circulatory system