Unit 8 Study Guide

Unit 8 Study Guide

1. How many liters of blood does the average adult have?

They have 5 liters of blood.

2. What are the components of blood?

White blood cells, red blood cells, plasma, and platelets.

3. What does the hematocrit measure?

It measures the number of cells and volume of cells.

4. What percentage of blood is cells?

45%

5. What percentage of blood is made of plasma?

55% of blood is made of plasma.

6. What do erythrocytes look like and what is their function?

The erythrocyte looks like a disk-shaped and bi-concaves. Their function is carry oxygen into the body.

7. How do mature erythrocytes differ from immature ones?

The mature erythrocytes are flexible and do not contain a nucleus. The immature erythrocyte does have a nucleus.

8. What is a normal RBC Count?

RBC count measures the amount of red blood cells in a sample. It makes an estimate of how much there is an a person’s blood. For adult males it is nearly 4.8-6.2 million cells per mm cube and for adult females would be around 4.4-5.4 million cells per mm cube.

9. What makes blood red?

A protein called hemoglobin makes blood red.

10. How long does the average RBC live?

The average life is about 120 days.

11. What hormone controls the rate of rbc synthesis?

It is controlled by a protein called erythropoietin.

12. What element is part of a red blood cell?

Iron and Calcium

13. What is sickle-cell anemia and what is its cause?

It is a disorder in the red blood cells in which reduces the oxygen in the blood. The cause is inheritance.

14. What are the causes of Anemia

The cause of anemia includes a lack of enough RBC’S, B complex deficiency, iron deficiency, and erythropoietin.

15. What is the difference between sickle cell anemia and sickle trait?

Sickle cell trait is due to inheritance of one copy of the sickle gene. Sickle cell disease results from the inheritance of two...