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Questions and Answers
What is the primary function of blood involved in maintaining body temperature?
What is the primary function of blood involved in maintaining body temperature?
- Protection
- Regulation (correct)
- Distribution
- Transport
Blood constitutes approximately 75% of plasma.
Blood constitutes approximately 75% of plasma.
False (B)
Name one of the main components of blood.
Name one of the main components of blood.
Plasma
The percentage of blood that is made up of plasma is _____%.
The percentage of blood that is made up of plasma is _____%.
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Match the following components to their descriptions:
Match the following components to their descriptions:
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Study Notes
Functions of Blood
- Distribution: Transports oxygen, nutrients, hormones, and waste products throughout the body.
- Regulation: Maintains homeostasis by regulating pH, temperature, and fluid balance.
- Protection: Defends against pathogens through immune responses and blood clotting mechanisms.
Blood Composition
- Blood Volume: Comprises approximately 7-8% of body weight; average adult volume is 4-6 liters.
- pH Level: Typically maintained between 7.35 and 7.45 to ensure proper physiological functions.
- Temperature: Blood temperature is about 1°C higher than body temperature due to metabolic activity.
Blood Components
- Plasma: Makes up 55% of blood volume; consists of:
- Water: About 90-92% of plasma, serving as the solvent for various substances.
- Plasma Proteins: Includes albumin, globulins, and fibrinogen, playing roles in osmotic balance, immune function, and clotting.
- Other Substances: Contains electrolytes, nutrients, hormones, and waste products.
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