Chapter 19 Blood: Guided Study and Step-by-Step Review

Q2. Describe the major functions and physical characteristics of blood.

Background

Topic: Blood Physiology

This question tests your understanding of the roles blood plays in the body and its main physical properties.

Key Terms:

• Functions of blood: transportation, regulation, protection

• Physical characteristics: viscosity, temperature, pH, color, volume

Step-by-Step Guidance

1. List the three major functions of blood (think about what blood transports, how it helps maintain homeostasis, and how it protects the body).

2. For each function, provide at least one example (e.g., what substances are transported, what is regulated, what is protected against).

3. Identify and describe at least three physical characteristics of blood (such as color, viscosity, temperature, pH, and average volume in adults).

4. Explain why each physical characteristic is important for blood's function in the body.

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Q3. Explain the relationship between blood and interstitial fluid. How are the two fluids similar and how are they different?

Background

Topic: Body Fluids and Homeostasis

This question examines your understanding of how blood and interstitial fluid interact and their roles in the body.

Key Terms:

• Blood plasma

• Interstitial fluid

• Capillary exchange

Step-by-Step Guidance

1. Define blood plasma and interstitial fluid, noting where each is found in the body.

2. Describe how substances move between blood and interstitial fluid (think about capillary walls and diffusion).

3. List at least two similarities between blood plasma and interstitial fluid (e.g., both are extracellular fluids, both contain dissolved substances).

4. List at least two differences (e.g., protein content, location, function).

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Q6. Define hematocrit, and explain how it is determined. What are normal ranges of hematocrit? What might abnormal hematocrit numbers indicate?

Background

Topic: Blood Analysis

This question tests your knowledge of hematocrit, its measurement, and clinical significance.

Key Terms and Concepts:

• Hematocrit (Hct)

• Red blood cells (erythrocytes)

• Normal ranges (men vs. women)

Step-by-Step Guidance

1. Define hematocrit and explain what it measures in the blood.

2. Describe the basic procedure for determining hematocrit (think about centrifugation and what layers form).

3. State the typical normal ranges for hematocrit in adult males and females.

4. Discuss what high or low hematocrit values might indicate about a person's health (e.g., dehydration, anemia, polycythemia).

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Q16. Define anemia. What can cause it? Be familiar with different types of anemia.

Background

Topic: Blood Disorders

This question focuses on the definition, causes, and types of anemia.

Key Terms:

• Anemia

• Hemoglobin

• Red blood cell count

Step-by-Step Guidance

1. Define anemia in terms of red blood cell count and/or hemoglobin concentration.

2. List at least three possible causes of anemia (e.g., blood loss, decreased production, increased destruction).

3. Name and briefly describe at least two different types of anemia (e.g., iron-deficiency anemia, sickle cell anemia, pernicious anemia).

4. Explain how each type affects the body's ability to transport oxygen.

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