BLOOD
Blood is made up of 4
components.
Red Blood Cell
White Blood Cell
Platelets
Plasma
PLASMA• The liquid portion
of the blood• Mostly made up of
water• It carries:
– nutrients – chemical
messengers– wastes
Red Blood Cells (RBC)• Takes up O2 &
delivers it to cells.• No nucleus• Round donut, with
no hole
• Hemoglobin:- Found in the RBC.– An iron containing
protein that binds chemically to O2.
White Blood Cells (WBC)
• Fights diseasesGet rid of bad bacteria, viruses and other invaders
• How are they different from RBC?– There are fewer of
them.(1:1000)– They are bigger– They have nuclei– Most live for months
or even years.
Platelets • They are pieces of
cells fragments.• Help form blood
clots.– Fibrin (a protein)
weaves a net of tiny fibers across a cut, which traps blood cells & platelets that form a clot.
Blood Transfusion
• The transfer of blood from one person to another when clotting isn’t working and a person is losing too much blood.
Blood TypesType A Antigen A marker
Anti B markers
Type B Antigen B markerAnti A markers
Type AB Antigen A and B markersNo markers (no clumping proteins)
Type O NO antigen markersAnti A & Anti B markers
BLOOD TYPE “A”• Has “A” antigens
(markers) to make it an “A” blood cell.
• Has antibody “B” markers that will clump and destroy any “B” blood cell.
• Can receive from “A” and “O”
• Can donate to “A” and “AB”
Rh Factor (13)
• Another protein found on RBC.• Rh+ you have the Rh
marker(s)• Rh- no Rh marker
Lymphatic System (18-20)
• A network of vein like vessels that returns fluids to the bloodstream.
• Lymph: fluid inside the lymphatic system.
• Lymph nodes filter lymph trapping bacteria & other micro organisms that cause diseases.