Circulatory system

Question 1

Function: transports

Answer 1

O2 and CO2
Nutrients
Metabolic wastes 
Hormones 
Heat

Question 2

Function: regulates

Answer 2

Body temperature

Question 3

Function: protects

Answer 3

Against infection

Question 4

Composition of blood: 2 major components

Answer 4

1. Formed elements: blood cells

2. Plasma: complex aqueous solution

Question 5

Composition of blood: 3 major types

Answer 5

Erythrocytes: RBC
Leukocytes: WBC
Thrombocytes: Platelets

Question 6

Main function of Erythrocytes

Answer 6

Transports O2

Question 7

Where do RBC reproduce from?

Answer 7

Bone marrow

Question 8

RBC: where are old cells removed by?

Answer 8

Spleen and liver

Question 9

What happens if too many RBC are broken down for the spleen and liver to handle?

Answer 9

Jaundice results

Question 10

What is Jaundice?

Answer 10

Disease characterized by yellow skin and sclera of the eyes

Question 11

What causes yellow skin and sclera of the eyes?

Answer 11

Bilirubin in the tissues

Question 12

Erythrocytes Problems: Anemia (7)

Answer 12

Hemorrhagic: blood loss
Hemolytic: to cut and destroy blood cells
Aplastic: inhibition of red bone marrow
Iron deficiency: inadequate dietary iron
Protein deficiency: inadequate dietary protein
Pernicious: vitamin B deficiency
Sickle cell: hereditary

Question 13

Polycythemia has too many what?

Answer 13

RBC

Question 14

How do you know if you have the right # of RBC? (3) What test do you take?

Answer 14

Hematocrit test!

1. The proportion of RBC in blood
2. Expressed as A%
3. Value of 25% means 25% of blood is RBC