Blood & Lymph Notes

Blood is unique because it is the only liquid tissue.

Main functions of blood… -delivers nutrients & oxygen to cells

-carries carbon dioxide & wastes from cells

-clots to help heal wounds & helps fight disease or infection

-helps regulate body temperature

Blood is made up of… White blood cells Red blood cells Plasma Platelets

liquid part of the blood that carries carbon dioxide from body cells to lungs for exhalation. Plasma…

pick up oxygen in lungs & carry it to the body cells… Red blood cells…

…made up of hemoglobin which turns bright red when it binds with oxygen…

…lack a nucleus so they cannot reproduce so new cells are made in the bone marrow.

are also made in the bone marrow & are the bodies disease fighters… White blood cells…

…they can kill disease- causing organisms by releasing antibodies.

Cell fragments that cause blood to clot to stop bleeding… Platelets

protein markers (A & B) on red blood cells that determine a person’s blood types and stimulates the production of antibodies… Antigens

Four types of blood… A, B, AB, O.

…knowing your blood type is important in case you ever need a blood transfusion where they transfer blood from one person to another.

…antigens in the blood must match or proteins in the plasma will clump together (**so they cannot flow or carry materials).

network of vein-like vessels that return fluid to the blood that leaks our of the blood vessels. Lymphatic system…

is what the fluid is called once it leaves the blood vessels & is made up of water, white blood cells & dissolved materials… Lymph…

…no organ to pump it so it moves slowly & is connected to large veins in the chest…

lymph passes lymph nodes (“glands”) which trap bacteria & other microorganisms that cause disease causing them to swell.

Human lymph nodes