By: Lonnie, Austin, Brittny, and Amy

Your heart pumps blood through all

your blood vessels.

Blood is connective tissue made Blood is connective tissue made up of two types of cells, cell parts, up of two types of cells, cell parts, and plasma. and plasma. Plasma is the liquid part of blood. Plasma is the liquid part of blood. Red blood Red blood

cells supply your cells with oxygen. cells supply your cells with oxygen.

White blood cells fights White blood cells fights bacteria ,viruses and other bacteria ,viruses and other

sickness. sickness. Platelets clump together in Platelets clump together in

the harmed areas. the harmed areas.

Arteries are blood vessels

that direct blood away

from the heart.

Arteries have thick elastic walls that

contain smooth

muscles.

Veins are blood vessels that direct blood back to the

heart.

In the capillaries of the lungs,blood absorbs oxygen and

releases carbon dioxide. The right ventricle pumps oxygen-poor blood into the arteries that lead to the lungs. Oxygen-poor blood travels back to the heart and is delivered into the right

atrium by two large veins.

The types of blood are A,B,AB,and O. Antigens are: chemicals you have on the surface of

your RBCs. Types A blood has antigens; type B blood has antigens; and type AB blood has A&B

antigens. Antibodies are chemicals in plasma, when antibodies bind RBCs, and cause RBCs to clump

together. People with type B blood make A antibodies, type O blood can be given to anyone

because it’s RBCs don’t have any A or B antigens on their surface. People with type O blood are said to be

universal donors.

The leading cause of death in the USA is arteriosclerosis a cardiovascular disease.

Arteriosclerosis occurs when fatty materials,like cholesterol ,build up on the inside of blood vessels. The fatty build up causes the blood to become narrower and less elastic. Arteriosclerosis can cause a

heart attack and can cause strokes. The only way to cure arteriosclerosis is to remove

fatty build up on the inside of blood vessels and block blood flow.

If all the blood If all the blood vessels in your body vessels in your body were strung together were strung together

the total length the total length would be more than would be more than

twice the twice the circumference of the circumference of the

Earth!!!Earth!!!

Wow !!