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.