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Questions and Answers
What is the primary function of blood in relation to temperature?
Plasma accounts for approximately 55% of total blood volume.
True
List one component of blood and its role.
Red blood cells - transport oxygen throughout the body.
Blood is primarily composed of _____ and blood cells.
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Match the following components of blood with their functions:
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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 body temperature, pH levels, and fluid balance.
- Protection: Provides defense against pathogens and facilitates blood clotting to prevent excessive bleeding.
Blood Volume and Composition
- Total blood volume varies based on body size and composition, typically around 5-6 liters in adults.
- Average blood pH maintained around 7.35-7.45, crucial for proper physiological functions.
- Blood temperature generally slightly warmer than body temperature, around 38°C (100.4°F).
Components of Blood
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Plasma constitutes approximately 55% of total blood volume.
- Composed mostly of water (about 90%), essential for transport and cellular function.
- Plasma Proteins: Major types include albumins (regulate osmotic pressure), globulins (immune function), and fibrinogen (involved in clotting).
- Other Substances: Includes electrolytes, nutrients, hormones, and waste products.
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Description
Prepare for Exam 1 in Biology 112 with this review sheet focused on Chapter 17, which covers the essential functions of blood, including distribution, regulation, and protection. Understand the composition of blood and its significance in maintaining volume, pH, and temperature.
