Heart Cirrculatory System

Question 1

Main Functions of the circulatory system

Answer 1

Transport O2 and nutrients to our cells
Remove cellular wastes
Heat distribution
Circulation of hormones, immune cells, and clotting factors
Maintenance of fluid levels and blood pressure

Question 2

Heart

Answer 2

muscular organ, pumps to circulate blood throughout body.

Question 3

Pericardium

Answer 3

Fluid-filled membrane, helps to reduce friction between heart and lungs.

Question 4

Atria (singular: atrium)

Answer 4

thin-walled chambers that receive blood from the veins

Question 5

Ventricles

Answer 5

thick, muscular walled chambers that deliver blood to the arteries

Question 6

Septum

Answer 6

muscle tissue separating the left and right ventricle

Question 7

Atrioventricular (AV) Valves:

Answer 7

Separate atria from ventricles
Prevent flow of blood back into atria
Right side is the tricuspid valve
Left side is the bicuspid valve or mitral valve
Supported by bands of connective tissue called chordae tendinae

Question 8

Semilunar Valves

Answer 8

Separate ventricles from arteries
Prevent blood flow back into the ventricles

Question 9

Superior Vena Cava:

Answer 9

vein that brings deoxygenated blood to the heart from the upper half of the body

Question 10

Inferior Vena Cava:

Answer 10

vein that brings deoxygenated blood to heart from lower half of body

Question 11

Right Atrium:

Answer 11

chamber of heart that receives deoxygenated blood from superior & inferior vena cava

Question 12

Right Ventricle:

Answer 12

chamber of the heart that receives deoxygenated blood from the right atrium. Pumps blood to the pulmonary arteries.

Question 13

Right AV (Tricuspid) Valve:

Answer 13

between the right atrium and right ventricle. Prevents blood flow back to the atrium.

Question 14

Pulmonary Arteries:

Answer 14

carry deoxygenated blood from the heart to the lungs

Question 15

Pulmonary Veins:

Answer 15

carry oxygenated blood from the lungs to the heart

Question 16

Left AV (bicuspid) valve:

Answer 16

between the left atrium and left ventricle. Prevents blood flow back to the atrium.

Question 17

Left Ventricle:

Answer 17

chamber of the heart that receives oxygenated blood from the left atrium. Pumps blood to the aorta. The left ventricle is more muscular than the right ventricle

Question 18

Aorta

Answer 18

carry oxygenated blood from the heart to the body

Question 19

Pulmonary Circulation:

Answer 19

involves the vessels that carry blood to and from the lungs

Question 20

Systemic Circulation:

Answer 20

involves the vessels that carry blood to and from the body’s other tissues.

Question 21

Pulmonary Circulation Pathway

Answer 21

Blood low in O2 (deoxygenated) moves from right ventricle into pulmonary arteries and carried to lungs.

Blood high in O2 (oxygenated) returns from lungs through pulmonary veins into left atrium.

right ventricle → pulmonary arteries → lungs → pulmonary veins → left atrium

Question 22

Systemic Circulation Pathway

Answer 22

BloodSystemic Circulation Pathway
high in O2 (oxygenated) leaves the left ventricle into the aorta to the rest of the body.

Blood low in O2 (deoxygenated) returns to the heart by the inferior and superior vena cavae into the right atrium.