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What does the circulatory system consist of?

Heart, blood vessels, blood

1

What are four functions of the circulatory system?

1. Transport of O2, CO2, nutrients, waste, hormones and stem cells

2. Protection through inflammation, white blood cells, antibodies and plasma proteins

3. Regulation by fluid distribution, buffering the pH of the extracellular fluid, and body temperature

2

What is the liquid connective tissue that is composed of plasma and formed elements?

Blood

3

What percent of our body weight is blood?

8%

4

How much blood is in an adults body?

4 to 6 L

5

What temperature does blood remain at?

38°C

6

What is the pH range of blood?

7.35 – 7.45

7

What is the liquid portion of blood called?

Plasma

8

Plasma is what percent of the whole blood?

47 to 63%

9

Plasma is made up of four parts, what are they?

Serum
Water
Plasma proteins, which the liver produces most of
Other solutes

10

What is serum?

It is plasma with fibrinogen absent. Fibrinogen is a protein found in blood that is important for blood clotting

11

Water makes up what percentage of the plasma?

92%

12

Plasma proteins make up what percent of plasma?

8%

13

There are three types of plasma proteins, what are they?

Albumin
Globulins
Fibrinogen

14

Albumin contributes to what?

Albumin transports what?

Albumin buffers what?

Viscosity and colloid osmotic pressure

Lipids, calcium, hormones, etc.

Blood pH

15

Globulins are broken down into three types what are they?

Alpha, Beta and Gamma

16

What does the Alpha globulins do?

Transport solutes, promotes blood clotting

17

What does the beta globulins do?

Transport solutes, aids in defense

18

What does gamma globulins do?

Antibodies which combat pathogens

19

What does fibrinogen do?

Becomes a component of blood clots

20

The fourth part of plasma is other solutes, what does that include?

Nitrogenous wastes, electrolytes, nutrients

21

The production of blood is called?

Hemopoiesis

22

During embryonic development, stem cells from the yolk sac Migrate to where?

What happens next?

The bone marrow, liver, spleen, and thymus

The stem cells multiply and give rise to blood cells

23

From infancy onward red bone marrow produces what?

What are also produced in the lymphatic tissues and organs?

Formed elements

Lymphocytes

24

What do hemopoietic stem cells have the potential to develop into?

Multiple mature cell types

25

Specialized cells that produce one class of form elements are called?

Colony – forming units

26

What is another name for red blood cells or RBCs?

Erythrocytes

27

Erythrocytes make up what percentage of total blood volume?

37 - 52%

28

What are the two functions of red blood cells?

1. To pick up oxygen from the lungs and deliver it to the tissues

2. To pick up carbon dioxide from the tissues and unload it into the lungs

29

What shape are red blood cells?

Discoid or round with a thick rim and sunken center