Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

22. The Respiratory System

Introduction to Lung Physiology

Anatomy & Physiology

22. The Respiratory System

Introduction to Lung Physiology

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Problem 14c

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Hb in arterial blood is normally almost fully saturated.

Verified step by step guidance

Step 1: Understand the context of the problem. The question is asking about hemoglobin (Hb) saturation in arterial blood, which refers to the percentage of hemoglobin molecules bound to oxygen in the blood traveling away from the lungs to the tissues.

Step 2: Recall the physiological concept of oxygen transport. Hemoglobin in arterial blood is typically highly saturated with oxygen because it has just passed through the lungs, where oxygen is abundant. This saturation is usually around 95-98% under normal conditions.

Step 3: Evaluate the statement provided. The statement 'Hb in arterial blood is normally almost fully saturated' aligns with the physiological norm, as arterial blood is indeed almost fully saturated with oxygen.

Step 4: Determine whether the statement is true or false. Based on the physiological explanation, the statement is true. If it were false, you would need to correct it by stating that arterial hemoglobin is normally almost fully saturated with oxygen.

Step 5: Conclude the analysis. Since the statement is true, no correction is needed. If the statement were false, you would rewrite it to reflect the normal saturation levels of hemoglobin in arterial blood.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Hemoglobin Saturation

Hemoglobin saturation refers to the percentage of hemoglobin molecules in the blood that are bound to oxygen. In healthy individuals, arterial blood typically shows a saturation level of about 95-100%, indicating that hemoglobin is almost fully saturated with oxygen, which is crucial for efficient oxygen transport to tissues.

Arterial Blood Gases (ABG)

Arterial blood gases are tests that measure the levels of oxygen and carbon dioxide in the blood, as well as the blood's pH. These measurements are essential for assessing respiratory function and the effectiveness of oxygen delivery, providing insight into the saturation of hemoglobin in arterial blood.

Oxygen Transport

Oxygen transport is the process by which oxygen is carried from the lungs to the tissues via the bloodstream. Hemoglobin plays a vital role in this process by binding to oxygen in the lungs and releasing it in the tissues, making understanding its saturation levels critical for evaluating respiratory and circulatory health.

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Related Practice

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

The pseudostratified ciliated columnar epithelium of the respiratory tract warms, filters, and humidifies the inspired air.

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Textbook Question

The function of the epiglottis is to:

a. Contract muscularly to cover the laryngopharynx

b. Vibrate to produce sound

c. Trigger a cough reflex

d. Cover the glottis during swallowing

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Oxygen is transported primarily by dissolving in the plasma.

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Each Hb protein can carry up to four oxygen molecules.

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

When the PO₂ of arterial blood drops slightly, the percent saturation of Hb drops dramatically.

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Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Increased P_CO2, temperature, and hydrogen ion concentration all increase Hb's affinity for oxygen.

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Multiple Choice

The exchange of gases between blood and the air in the lungs is known as:

Most physiological measures are taken during eupnea, or quiet breathing. This means that:

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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.Hb in arterial blood is normally almost fully saturated.

Key Concepts

Hemoglobin Saturation

Arterial Blood Gases (ABG)

Oxygen Transport

Watch next

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Hb in arterial blood is normally almost fully saturated.