Term
| What are the components of blood? |
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Definition
- liquid plasma
- erythrocytes (red blood cells)
- leukocytes (white blood cells)
- platelets |
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Term
| What are the physical characteristics of blood? |
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Definition
- color varies from scarlet (oxygen rich) to dark red (oxygen poor)
- pH ranges from 7.35-7.45
- temperature is 38*C (slightly higher than "normal" body temperature)
- accounts for approximately 8% of body weight
- average volume for males 5-6L; 4-5L for females |
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Term
| What are the functions of blood? |
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Definition
1. Blood transports oxygen from the lungs; nutrients from the digestive tract; metabolic wastes from cells to the lungs and kidneys for elimination; hormones from endocrine glands
2. Blood maintains appropriate body temperature by absorbing and distributing heat; normal pH in body tissues; adequate fluid volume in the circulatory system
3. Protects the body by preventing blood loss by 1) activating plasma proteins and platelets and 2) initiating clot formation. Blood also protects the body by preventing infection by 1) synthesizing and utilizing ANTIBODIES and 2) activating leukocytes (white blood cells). |
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Term
| What is the name of the molecule in erythrocytes (red blood cells) that binds to oxygen? |
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Definition
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Term
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Definition
| the process by which erythrocytes (red blood cells) are produced |
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Term
| How is ertythropoesis controlled? |
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Definition
Ertythropoesis is triggered by:
- hypoxia due to decreased oxygen |
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