cardiovascular and lymphatic systems

Question 1

cardiovascular system

Answer 1

composed of the heart and blood vessels
distributes blood, delivers nutrients, and removes wastes

Question 2

heart

Answer 2

muscular pump that keeps blood flowing through an animals body

Question 3

four chambers of the human heart

Answer 3

two atria and two ventricles

Question 4

artery

Answer 4

muscular tube that transports blood away from the heart towards the cells of body tissues

Question 5

pulse

Answer 5

rhythmic expansion of an artery created by the surge of blood pushed along the artery

Question 6

arterioles

Answer 6

small blood vessel located between an artery and a capillary
regulate blood flow

Question 7

capillaries

Answer 7

microscopic blood vessel between arterioles and venules with walls only one cell layer thick
site where the exchange of materials between the blood and the tissues occurs

Question 8

capillary bed

Answer 8

network of true capillaries servicing a particular area

Question 9

precapillary sphincter

Answer 9

ringlike muscle that acts as a valve that opens and closes a capillary bed

Question 10

venule

Answer 10

small blood vessel that receives blood from the capillaries

Question 11

veins

Answer 11

blood vessel formed by the merger of venules that transport blood back towards the heart

Question 12

myocardium

Answer 12

cardiac muscle tissue that makes up the bulk of the heart

Question 13

endocardium

Answer 13

thin layer that lines the cavities of the heart

Question 14

pericardium

Answer 14

fibrous sac enclosing the heart that holds the heart in the center of the chest without hampering its movement

Question 15

septum

Answer 15

a wall that separates the right and left sides of the heart

Question 16

ventricle

Answer 16

functions as the main pumps of the heart

Question 17

right ventricle

Answer 17

pumps blood to the lungs

Question 18

left ventricle

Answer 18

pumps blood to body tissues

Question 19

atrioventricular valves

Answer 19

conducts an electrical impulse

Question 20

semilunar valves

Answer 20

heart valves located between each ventricle and its connecting artery that prevent the backflow of blood from the artery to the ventricle

Question 21

pulmonary circuit

Answer 21

pathway that transports blood from the right ventricle of the heart to the lungs and back to the left atrium of the heart

Question 22

systemic circuit

Answer 22

pathway of blood from the left ventricle of the heart to the cells of the body and back to the right atrium

Question 23

coronary circulation

Answer 23

the system of blood vessels that services the tissues of the heart itself

Question 24

coronary arteries

Answer 24

the arteries that brings blood to cardiac muscle

Question 25

systole

Answer 25

contraction of the heart

Question 26

diastole

Answer 26

relaxation of the heart

Question 27

cardiac cycle

Answer 27

the events associated with the flow of blood through the heat during a single heartbeat

Question 28

sinoatrial node

Answer 28

region of specialized cardiac muscle cells located in the right atrium sends out electrical signal that spreads through the muscle cells of the atria causing them to contract

Question 29

atrioventricular node

Answer 29

relays stimulus to ventricles that runs along the wall between the ventricles

Question 30

electrocardiogram

Answer 30

graphical record of the electrical activities of the heart

Question 31

blood pressure

Answer 31

the force exerted by the blood against the walls of the blood vessels

Question 32

systolic pressure

Answer 32

the highest pressure in an artery during each heartbeat (when the heart is contracting)

Question 33

diastolic pressure

Answer 33

the lowest blood pressure in an artery during the relaxation of the heart (when the heart is relaxing)

Question 34

lymphatic system

Answer 34

transports and assists in body defenses

Question 35

lymph

Answer 35

the fluid within the vessels of the lymphatic system.

Question 36

lymphatic vessels

Answer 36

vessel through which lymph flows

Question 37

lymph nodes

Answer 37

small nodular organs found along lymph vessels that filter lymph

Question 38

spleen

Answer 38

largest lymphoid organ removes old or damaged blood vessels from the blood

Question 39

thymus gland

Answer 39

gland located on the top of the heart that secretes hormones and decreases in size as we age

Question 40

what is the biggest killer of men and women in the united states

Answer 40

cardiovascular disease

Question 41

thrombus

Answer 41

stationary blood clot

Question 42

embolism

Answer 42

blockage of a blood vessel

Question 43

atherosclerosis

Answer 43

buildup of fatty substances in the arteries fueled by an inflammatory response

Question 44

myocardial infarction (heart attack)

Answer 44

a part of the heart muscle dies because of insufficient blood supply