The Heart

Question 1

Pericardium

Answer 1

fibrous fluid-filled sac that protects and holds it in place

Question 2

Aorta

Answer 2

the largest artery in the body, carries blood from the left ventricle to the rest of the body

Question 3

Superior vena cava

Answer 3

Large vein that collects blood from the upper body and transports it to the right atrium

Question 4

Inferior Vena cava

Answer 4

large vein that collects blood from the lower body and transports it into the right atrium

Question 5

right atrium

Answer 5

upper right chamber of the heart that collects deoxygenated blood from the vena cava and contracts to force blood into the right ventricle

Question 6

left atrium

Answer 6

upper left chamber of the heart that collects oxygenated blood from the pulmonary veins and contracts to force blood into the left ventricle

Question 7

right ventricle

Answer 7

contracts to force blood into the pulmonary artery which then goes to the lungs

Question 8

left ventricle

Answer 8

contracts to force blood into the aorta which then goes to the rest of the body

Question 9

tricuspid valve

Answer 9

3 flapped valve that closes to prevent blood from flowing back into the right atrium while the right ventricle contracts

Question 10

bicuspid valve

Answer 10

2 flapped valve that closes to prevent blood from flowing back into the left atrium when the left ventricle contracts

Question 11

pulmonary artery

Answer 11

artery that carries deoxygenated blood from the right ventricle to the lungs

Question 12

pulmonary vein

Answer 12

vein that carries oxygenated blood from the lungs to the left atrium

Question 13

coronary arteries

Answer 13

arteries that branch off the aorta to provide oxygenated blood to the heart tissue

Question 14

pulmonary semilunar valve

Answer 14

valve at the mouth of the pulmonary artery which prevents backflow of blood into the right ventricle

Question 15

aortic semilunar valve

Answer 15

valve at the mouth of the aorta which prevents backflow of blood into the left ventricle

Question 16

septum

Answer 16

divides the heart into two sides

Question 17

deoxygenated blood flow summary

Answer 17

deoxygenated blood enters through the vena cava and into the right atrium
the blood is pumped into the right ventricle through the tricuspid valve
the right ventricle pumps blood through pulmonary valve into the left and right pulmonary arteries
blood travels to lung capillaries where O2 is picked up and Co2 is dropped off

Question 18

oxygenated blood summary

Answer 18

oxygenated blood enters the left atrium through the pulmonary veins
blood is pumped into the left ventricle through the bicuspid valve
blood is pumped into the aorta which goes to the rest of the body

Question 19

Arteries

Answer 19

carry blood away from the heart
walls are thick and contain smooth muscle
walls are elastic

Question 20

Veins

Answer 20

carry blood back to the heart

movement of blood is aided by muscles surrounding the veins, blood is prevented from flowing backward by one way valves

Question 21

What makes up a vein

Answer 21

connective tissue, muscle tissue, and epithelial tissue

Question 22

why is there no pulse in veins

Answer 22

because their not under pressure

Question 23

varicose veins

Answer 23

when valves collapse and the result is pooling of blood in the feet

Question 24

lumen

Answer 24

area of space in veins/arteries

Question 25

capillaries

Answer 25

microscopic blood vessels that link arterioles and venules. walls are one cell thick and 1 blood cell can pass through at a time
where exchange of nutrients, wastes, and gases take lace by diffusion