The Circulatory System

Question 0

Superior and Inferior Vena Cava

Answer 0

Deoxygenated blood from the body enters the heart via these veins

Question 1

The heart

Answer 1

Cardiac muscle, contracts by its self, has its own pace maker. Involuntarily regulated by the autonomic nervous system. Consists of four chambers; left and right atria and ventricles. Valves (Tricuspid, pulmonary, mitral, aortic) exists to prevent the back flow of blood.

Question 2

Right Atrium

Answer 2

Deoxygenated blood first enters into this chamber

Question 3

Tricuspid Valve

Answer 3

Valve preventing back flow between right atrium and ventricle.

Question 4

Right Ventricle

Answer 4

Deoxygenated blood gets pumped to the lungs here.

Question 5

Pulmonary valve

Answer 5

Valve preventing back flow between right ventricle and pulmonary artery

Question 6

Pulmonary Artery

Answer 6

Deoxygenated blood flows to lungs via this artery

Question 7

Lungs

Answer 7

Gas exchange occurs here

Question 8

Pulmonary Veins

Answer 8

Oxygenated blood carried to the heart via this vein.

Question 9

Left atrium

Answer 9

Oxygenated blood first enters this chamber

Question 10

Mitral Valve (Bicuspid Valve)

Answer 10

Valve preventing back flow between left atrium and left ventricle. Also called the bicuspid valve.

Question 11

Left Ventricle

Answer 11

Oxygenated blood gets pumped to the body here.

Question 12

Aortic Valve

Answer 12

Valve preventing back flow between left ventricle and the Aorta

Question 13

Aorta

Answer 13

Oxygenated blood flows to the rest of the body via this artery.

Question 14

Blood Pressure

Answer 14

Systolic- During ventricular contraction

Diastolic: During ventricular relaxation

Question 15

Hydro Static Pressure

Answer 15

Caused by blood pressure and volume that influences fluid migration across capillary walls. High hydrostatic pressure pushes fluid out of capillaries causing edema (swelling tissues)

Question 16

Perfusion

Answer 16

The delivery of oxygen and other nutrients to cells and wastes away at them. Adequate perfusion depends on adequate blood circulation

Question 17

Hyper Fusion (shock)

Answer 17

Also called shock, is inadequate perfusion. Can be caused by large loss of blood volume.

Question 18

Gas transport

Answer 18

Oxygen: 97% bound to hemoglobin, 3% dissolved plasma.

Carbon Dioxide: 70% as bicarbonate ion, 23% attached to hemoglobin, 7% dissolved in plasma.