The Cardiovascular System Module 11 Blood What is the composition of blood? 1. Formed elements 45% a. Red blood cells 95% b. Leukocytes and plasma 5% 2. Plasma 55% a. Water 90% b. Proteins, gases, nutrients, ions and waste products 10% *Note that different sources will have slightly different Percentages, for this class we will continue with what your book states What protein helps maintain water in the blood? Formed Elements in Blood Erythrocytes - Red Blood Cells These are the cells that carry oxygen (O2) in blood. These cells have an iron containing protein complex called hemoglobin that the oxygen is able to bind to and thus be carried around the body. RBC’s are a concave disc shape maximizing the surface area for them to bind and carry oxygen. Lets review: *Be able to draw a Heme molecule(the general idea anyway) - How many molecules of oxygen can a hemoglobin molecule bind? Where is Oxygen binding favored? Where is Carbon Dioxide binding favored? Formed Elements in Blood White blood cells - Leukocytes Types of WBC’S: ➔ Granulocytes (have vesicles that are easily stained and seen on a slide) ◆ Neutrophil ◆ Basophil ◆ Eosinophil ➔ Agranulocytes ◆ Lymphocytes ◆ monocytes *Note that we could spend an ENTIRE YEAR on the study of science related to the immune system IMMUNOLOGY. But way too much to cover today. *This is an extra video for those interested after class. May have extra credit question on next test! Hemostasis - how blood clots Platelets - cell fragments in blood, which help prevent blood loss Fibrin - A protein involved in forming blood clots in the body Blood Types What are the 4 types of blood? What is Rh antigen? Can you donate Rh+ blood to an Rh- recipient? Make a chart that describes what blood types can receive what kind of blood.
