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Circulatory System

Artery Have thick walls for the pressure of blood. carry oxygen rich blood away from the heart.
Vein Have thin walls. Carry oxygen poor blood toward the heart.
Capillaries Have thin walls. Is there where there needs to be a connection between a vein and artery
Blood Made of red blood cells, white blood cells, plasma, and platelets.
Heart Called cardiac muscle. pumps blood to cell to deliver oxygen.
How the Heart works #1 De-oxygenated blood enters through the Right Atrium. Goes through a valve into the Right Ventricle.
How the Heart works #2 right ventricle contracts forcing blood through a valve out of the Heart, towards the Lungs.Lungs will supply blood with oxygen.
How the Heart works #3 Oxygen rich blood enters Left Atrium then passes through a valve into the left ventricle.
How the Heart works #4 Left Ventricle contracts forcing Oxygen rich blood through another valve out of the heart to every cell,tissue, and organ in the body. Then the process starts over again.
Valve One way flow of blood makes the blood go faster.
Plasma Yellowish liquid. carries nutrients proteins, and hormones throughout the body. is 55% blood mostly water
White Blood cells Made in bone marrow. Fights infections.
Red blood cells Made in the bone marrow. has no organelles. Carries oxygen to every cell in the body. one drop of blood size of pinhead= up to 5mill
platelets Help the clotting process. Made in bone marrow. When blood vessel breaks, platelets in the area will seal the leak. Last 8 to 10 days.
Independent Variable The variable that is changed or manipulated.
Dependent Variable the variable that can be measured in some way
Control Group the group that is not changed in any way. Every thing will be compared to this group.
Control Variable the variable that isn't changed
Created by: danadg11