Circulatory System Vocabulary

Circulatory System Vocabulary
Created Dec 7, 2006
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blood
the fluid tissue of the body contained within the curculatory system
plasma
the liquid component of the blood
red blood cells
cells in the blood containing hemoglobin; carry oxygen
hemoglobin
iron containing molecule in red blood cells; used in transporting oxygen
white blood cells
colorless blood cell that protects the body from infection
platelets
cell fragments in the blood; help form blood clots
antibodies
produced by white blood cells to help fight infection
heart
a muscular organ that pumps blood
atriums
the two upper chambers of the heart. Atriums are the chambers that recieve blood coming from...
ventricles
the lower chambers of the heart. Ventricles pump blood away from the heart, either to the lungs...
valves
flap-like structures in the heart that close to prevent blood from flowing backwards
arteries
blood vessels that move blood away from the heart to the lungs or body
capillaries
microscopic blood vessels that connect arteries and veins. This is where the blood gives the...
veins
blood vessels that move blood toward the heart from the lungs or the body
pulmonary circulation
the flow of blood between the heart and lungs (ex: pulmonary arteries carry blood to the lungs...
systemic circulation
the flow of blood from the heart to all of your body except the lungs and back (ex: systemic...
blood pressure
the pressure or force of blood as it moves through the arteries
pulse
expansion and contraction of an artery as blood surges through it
superior vena cava
the large systemic vein that carries blood from the upper part of the body
inferior vena cava
large systemic vein that carries blood from the lower part of the body
aorta
the largest artery in the body
hypertension
the condition that occurs when blood pressure is higher than normal for long periods of time
septum
a muscular wall that divides the heart into two sides


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