Circulatory System Part 1 Review

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circulatory system

- body system that consists of the heart,blood vessels, and blood - also called cardiovascular system

aorta

- the largest artery in the body -pumps blood high in oxygen from the left ventricle out to the body

3 functions of the cardiovascular system

1. Delivering oxygen and nutrients to body cells. 2. Removing waste products from body cells. 3. Fighting pathogens/disease (white blood cells)

3 parts of the circulatory system

1. heart 2. blood vessels 3. blood

heart

a hollow, muscular organ that pumps blood throughout the body

arteries

blood vessels that carry blood away from the heart and most carry blood high in oxygen

veins

blood vessels that carry blood back to the heart and most carry blood low in oxygen

red blood cells

disk-shaped cells that carry oxygen

ventricle

each of the two lower chambers of the heart that pumps blood out of the heart

atrium

each of the two upper chambers of the heart that receives blood that comes into the heart

white blood cells

help to fight off foreign invaders/pathogens

platelets

part of the blood that helps the blood clot

pulmonary arteries

the arteries in the body that carry blood low in oxygen

plasma

the liquid part of the blood

left side

the side of the heart that pumps blood high in oxygen to the body

right side

the side of the heart that pumps blood low in oxygen to the lungs

pulmonary veins

the veins in the body that carry blood high in oxygen

capillaries

tiny blood vessels where substances are exchanged between the blood and the body cells

function of the heart

to act as a pump to send blood throughout the body.

function of capillaries

to exchange of materials such as oxygen & carbon dioxide between the blood and body cells.

inferior vena cava

vein entering the right atrium that brings in blood from the lower part of the body

superior vena cava

vein entering the right atrium that brings in blood from the upper part of the body


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