CIRCULATORY SYSTEM

pulmonary circulation

Carries deoxygenated blood from the heart to the lungs

pulmonary circulation

Oxygenated blood back from the lungs to the heart, ready to be pumped out to the body

systematic circulation

Carries oxygenated blood to the rest of the body through the arteries

systematic circulation

• Deoxygenated blood back to the heart through the veins.

blood, heart & blood vessels

organs of the circulatory system

vein, artery & capillary

types of blood vessels

vein

Carries blood back Into the heart

wider

vein has ? tube (lumen)

artery

carries blood away from the heart

narrow

artery has ??? central tube (lumen)

capillary

Carries blood to and from the body’s cells

capillary

Walls only one cell thick

artery

thick outer wall

artery

• Thick inner layer of muscle and elastic fibers

vein

thin outer wall

vein

• Thin inner layer of muscle and elastic fibers

heart

• It pumps the blood throughout the body

be merciful

have a heart

state of extreme grief or sorrow

broken heart

right atrium

Receives deoxygenated blood from the body through the superior and inferior vena cava

right ventricle

Pumps deoxygenated blood to the lungs via the pulmonary arteries.

left atrium

Receives oxygenated blood from the lungs through the pulmonary veins.

left ventricle

Pumps oxygenated blood to the rest of the body through the aorta

tricuspid ventricle

• Located between the right atrium and right ventricle; prevents backflow of blood from the right ventricle into the right atrium.

pulmonary valve

Located between the right ventricle and the pulmonary artery; prevents backflow of blood from the pulmonary artery into the right ventricle.

mitral valve (bicuspid valve)

Located between the left atrium and left ventricle; prevents backflow of blood from the left ventricle into the left atrium

aortic valve

Located between the left ventricle and the aorta; prevents backflow of blood from the aorta into the left ventricle

aorta

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

7

how many body cells does aorta have

8

how many veins does aorta have

pulmonary arteries

• Carry deoxygenated blood from the right ventricle to the lungs.

15

how many lungs

pulmonary veins

• Carry oxygenated blood from the lungs to the left atrium.

superior vena cava

• Returns deoxygenated blood from the upper body to the right atrium.

inferior vena cava

Returns deoxygenated blood from the lower body to the right atrium

oxygenated blood

• Bright Red. Carries Oxygen

deoxygenated blood

• Darker Red. Carries Carbon Dioxide

heart rate (pulse rate)

• is the number of times your heart beats every minute.

70-75 bpm

The average resting heart rate is about

blood pressure

??? depends on the speed of the blood coming into a vessel and the width of the vessel itself.

age

it increases as you get older.

gender

• men tend to have higher blood pressure than women.

diet

salt and saturated fats can increase blood pressure.

diet

• the fitter you are the lower your blood pressure is likely to be.

transporting substances around

the body means of

oxygen

• from the lungs to the heart and then to the body’s tissues

carbon dioxide

• from the tissues to the heart and then to the lungs to be expired materials like hormones from one organ to another

nutrients & minerals

from the intestines to the tissues

waste products

to the kidneys

blood

is made up of a number of different elements.

red blood cells

The most common cell in blood is the

erythrocytes

red blood cells is also called

platelets

are also carried in the blood.

plasma

The blood cells and platelets are suspended in a substance called