Anatomy & Physiology Chapter 18 Exam Questions and Answers - The Blood

Anatomy & Physiology Chapter 18 -
The Blood


Blood - Answers-Fluid circulated by heart through the blood vessels



Functions of Blood - Answers-1. Transportation

2. Regulation

3. Protection



Transportation (Function of Blood) - Answers-1. O2 and C02

2. Nutrients & wastes

3. Hormones



Regulation (Function of Blood) - Answers-1. Body temperature

2. pH by using buffers

3. Fluid balance



Protection (Function of Blood) - Answers-1. Protect against disease

2. Clotting (prevents excessive blood loss)



Characteristics of Blood - Answers-1. Blood volume

a) Average volume of blood in an adult is 5 liters

, b) Females have 4 to 5 liters

c) Males have 5-6 liters

2. Blood pH = 7.35 to 7.45



Composition of Blood - Answers-1. Plasma (liquid) - 55% of blood

2. Formed elements - 45% of blood

a) Red blood cells

b) White blood cells

c) Platelets



Blood Plasma - Answers-1. Straw (honey) - colored watery liquid

2. Plasma transports most substances in the blood

3. Plasma consists of:

a) Mostly water

b) Solutes (dissolved substance)

c) Plasma proteins

4. Albumen

5. Globulins

6. Fibrinogen



Plasma Proteins - Answers-1. Albumin

2. Globulins

3. Fibrinogen



Albumen - Answers-1. Maintains fluid balance (osmotic pressure)