Circulation: Heart

Question 1

what are the key parts of the circulatory system

Answer 1

1. heart-muscular pump that circulates blood
2. blood vessels- tubes that transport blood
3. blod

Question 2

Pericardium

Answer 2

a fluid-filled sack that protects and encloses the heart and hold it in place

Question 3

Aorta

Answer 3

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

Question 4

superior vena cava

Answer 4

a large vein that collects blood from veins in the head and arms and transports it to the right atrium

Question 5

inferior vena cava

Answer 5

a large vein that collects blood from the veins in the trunk and legs and transports it into the right atrium

Question 6

right atrium

Answer 6

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

Question 7

left atrium

Answer 7

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

Question 8

right ventricle

Answer 8

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

Question 9

left ventricle

Answer 9

largest muscular chamber that contracts to force blood into the aorta which then goes to the rest of the body

Question 10

Tricuspid Valve

Answer 10

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

Question 11

bicuspid valve

Answer 11

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

Question 12

pulmonary artery

Answer 12

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

Question 13

pulmonary vein

Answer 13

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

Question 14

coronary arteries

Answer 14

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

Question 15

pulmonary semilunar valve

Answer 15

valve at the mouth of the pulmonary arteries which prevents backflow of blood into the r.ventricle

Question 16

aortic semilunar valve

Answer 16

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

Question 17

blood flow summary (deoxygenated)

Answer 17

1. O2 poor and CO2 rich (deoxygenated) blood enters the right atrium from the vena cava
2. the blood is pumped to the right ventricle through the tricuspid valve
3. the right ventricle pumps the blood through the pulmonary artery which goes to the lungs (where oxygen is picked up and carbon dioxide is dropped)

Question 18

blood flow summary (oxygenated)

Answer 18

1. blood enters the left atrium from the pulmonary veins
2. blood is pumped to the left ventricle through the bicuspid valve
3. blood is pumped from the left ventricle through the aorta which goes to the rest of the body