BloodBlood• Blood has red cells(erythrocyctes)

• White cells (leukocytes)

• Platelets (thrombocytes)

Red Blood CellsRed Blood Cells

• Carry oxygen from the lungs

• Carry carbon dioxide back to the lungs

• Normally live 120 days

• Contains the protein hemoglobin

• Made from iron, folic acid, vitamin B12

• Made in the bone marrow

Red Blood CellsRed Blood Cells

Red cells look like Red cells look like doughnuts that are doughnuts that are very flexiblevery flexible

Red Blood CellsRed Blood Cells - Shape

Red cells travel through Red cells travel through very narrow blood vesselsvery narrow blood vessels

Red Blood CellsRed Blood Cells

• Red Cell Flow

Blood VesselBlood Vessel

Red Blood CellsRed Blood Cells - Hemoglobin

Hemoglobin is the Hemoglobin is the main chemical in main chemical in the red blood cell the red blood cell that does all of the that does all of the work carrying work carrying oxygen away from oxygen away from the lungs and the lungs and carbon dioxide carbon dioxide backback

Red Blood CellsRed Blood Cells - Hemoglobin

OxygenOxygen

Hemoglobin holds Hemoglobin holds four oxygen four oxygen molecules to take molecules to take to different parts to different parts of the bodyof the body

Red Blood CellsRed Blood Cells - Hemoglobin There are normally 3 types of hemoglobin in the red cell There are normally 3 types of hemoglobin in the red cell

made of 2 alpha chains from chromosome 16 and 2 beta, made of 2 alpha chains from chromosome 16 and 2 beta, delta, or gamma chains from chromosome 11delta, or gamma chains from chromosome 11

Red Blood CellsRed Blood Cells - Marrow

Red blood cells are Red blood cells are made in the bone made in the bone marrow - the inside marrow - the inside part of large bonespart of large bones

Red Blood CellsRed Blood Cells - Retics • Reticulocytes, or Retics are young red cells just released from the bone

marrow. The Retic count tells us how the marrow factory is doing.

Red Blood CellsRed Blood Cells

Red cells live Red cells live 120 days in the 120 days in the circulationcirculation

Food with iron Food with iron and vitamins and vitamins is digestedis digested

Red cells are Red cells are made in the made in the bone marrowbone marrow

Red Blood Cells - RecycledRed Blood Cells - Recycled Red cells are recycled in the spleen and liver. Red cells are recycled in the spleen and liver. The iron and protein are stored and bilirubin The iron and protein are stored and bilirubin is released.is released.

SpleenSpleen

LiverLiver

Red Blood CellsRed Blood Cells - The Kidney Erythropoietin is made by Erythropoietin is made by the kidney as a signal to the the kidney as a signal to the bone marrow to make more bone marrow to make more red cellsred cells

White Blood CellsWhite Blood Cells

• Fight infections

• Are increased in infections

• Move inside and outside of blood vessels

• Are made in the bone marrow

PlateletsPlatelets

• Plug holes in the body to stop bleeding• Can help cause blood to clot• Made in the bone marrow