Cardiovascular system

Question 1

lumen

Answer 1

space within a tubular part or organ, such as the space
within a blood vessel

Question 2

tunica

Answer 2

a layer in the wall of a blood vessel or other tubular structure (ex: tunica externa, tunica media, tunica intima)

Question 3

artery

Answer 3

largest type of blood vessel; carries blood away from the
heart to all parts of the body; thick walls/small lumen; high
pressure

Question 4

capillary

Answer 4

smallest blood vessel; thin walls allow substances to diffuse into or out of the blood

Question 5

vein

Answer 5

Thin-walled blood vessel that carries blood back to the
heart. Larger lumen and lower pressure compared to arteries.

Question 6

systematic circulation

Answer 6

pathway of circulation between the heart and the rest of the body except the lungs

Question 7

pulmonary circulation

Answer 7

flow of blood from the right side of the heart to the lungs and back to the left side of the heart

Question 8

atrium

Answer 8

Each of the two upper chambers of the heart that receives blood that comes into the heart

Question 9

ventricle

Answer 9

Each of the two lower chambers of the heart that pumps blood out of the heart

Question 10

hemostasis

Answer 10

stoppage of blood flow

Question 11

platelets

Answer 11

thrombocytes; cell fragments in the blood that are essential for blood clotting

Question 12

Fibrinogen/Fibrin

Answer 12

Inactive/active forms of protein that help to interlock and hold platelet plug at site of blood vessel injury

Question 13

cardiac muscle

Answer 13

Muscle of the heart that is branched, striated, single nucleated

Question 14

myocardium

Answer 14

middle, thick, muscular layer of the heart wall

Question 15

electrocardiogram

Answer 15

a record of the electrical activity of the myocardium

Question 16

Ventricular Fibrulation

Answer 16

muscles in the heart contract at different times, resulting in the lack of a unified contraction so there is no cardiac output

Question 17

defibrulation

Answer 17

Electrical shock applied to a patient in VF, designed to stop all cardiac muscle contraction in hopes that natural pacemaker can restart unified contraction

Question 18

SA node

Answer 18

the natural pacemaker of the heart, Located at the junction of the superior vena cava and the right atrium,

Question 19

AV node

Answer 19

delays transmission of electrical impulses to lower heart and allows time for the Atria to contract

Question 20

Erythrocytes

Answer 20

red blood cells

Question 21

Leukocytes

Answer 21

white blood cells