BLOOD

“The River of Life”

Components of Blood include

The formed elements - living cellsare suspended in the nonliving fluidmatrix called plasma.

P. 295 in your text.

Formed Elements include… Erythrocytes –RBCs - Transport oxygen and help transport carbon dioxideLeukocytes – WBCs – Defense and immunityThrombocytes – Platlets – Blood clotting

P. 299 in your text.

Platlets

Activated Platlets

Blood Types

• A and B blood types are both Dominant traits.

• A and B genes show co-dominance expression.

• O is recessive to A and B.

• RH positive blood types are Dominant to negative.

• Blood types are multiple allelic trait because it takes multiple genes to produce a blood type.

Who can receive ….

Agglutination

Sickle Cell Anemia

The result of a point mutation in the DNA of the affected individual.Caused by a recessive gene.

Rh- Mothers with RH+ babies

The mother begins Producing Anit + Antibodies during the 1st

Pregnancy and if she becomes pregnant with a 2nd RH+ baby her Antibodies will cross thePlacenta and attack the Baby’s blood causing a condition called hemolytic disease of the New born.

Hema - WHAT?

• Hematocrit

• Hematopoiesis

• Hemostasis

• Hemorrhage

Blood Composition QuestionsP. 294 & 295

1. What percent of whole blood is composed of plasma?

2. What is the function of water in blood?

3. What is the function of electrolytes? List 6 electrolytes.

4. What is the function of albumin?

5. What are the functions of fibrinogen and globulins?

6. List the substances transported by blood.

7. What % of blood is made of the formed elements?

8. What is hemoglobin?

9. What is hematocrit?