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Questions and Answers
What is the primary function of blood involved in maintaining body temperature?
Blood constitutes approximately 75% of plasma.
False
Name one of the main components of blood.
Plasma
The percentage of blood that is made up of plasma is _____%.
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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
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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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Description
Prepare for your Biology 112 Exam 1 with this comprehensive review on Chapter 17 focusing on blood. This quiz covers key functions of blood, its composition, and important concepts such as blood volume, pH, and temperature regulation. Test your understanding and ensure you're ready for your exam!
