Domanda del libro di testo
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.
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Ch. 21 The Respiratory System
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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TOC.tableOfContents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822Non è quello che usi tu?Cambia libro di testo
Capitolo 21, Problema 14a
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.
Guida verificata passo dopo passo1
Understand the role of oxygen transport in the blood. Oxygen is carried from the lungs to the tissues primarily by binding to hemoglobin in red blood cells, not by dissolving in the plasma.
Recall that only a small percentage of oxygen (about 1.5%) is dissolved directly in the plasma due to its low solubility in water.
The majority of oxygen (about 98.5%) is transported by binding to hemoglobin, forming oxyhemoglobin (HbO₂).
Evaluate the statement: 'Oxygen is transported primarily by dissolving in the plasma.' This is false because the primary method of oxygen transport is via hemoglobin, not plasma.
Correct the statement: 'Oxygen is transported primarily by binding to hemoglobin in red blood cells, with only a small amount dissolved in the plasma.'
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Oxygen Transport in Blood
Oxygen transport in the blood occurs mainly through two mechanisms: binding to hemoglobin in red blood cells and dissolving in plasma. While a small amount of oxygen is carried dissolved in plasma, the majority (about 98.5%) is transported bound to hemoglobin, which allows for efficient oxygen delivery to tissues.
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Percorso guidato
6:11
Functions of Blood
Role of Hemoglobin
Hemoglobin is a protein found in red blood cells that binds to oxygen molecules. Each hemoglobin molecule can carry up to four oxygen molecules, significantly increasing the blood's oxygen-carrying capacity compared to what could be transported dissolved in plasma alone. This binding is crucial for maintaining adequate oxygen levels in the body.
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Percorso guidato
7:52Function of Hemoglobin
Plasma and Gas Solubility
Plasma is the liquid component of blood that carries various substances, including gases. While gases like oxygen can dissolve in plasma, their solubility is limited. This is why the majority of oxygen is transported via hemoglobin, as the amount that can be carried dissolved in plasma is insufficient for the body's needs.
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03:59Gas, Nutrient and Waste Exchange
Pratica correlata
Domanda del libro di testo
Which of the following does not affect the efficiency of pulmonary gas exchange?
a. The surface area of the respiratory membrane
b. The degree of match of ventilation to perfusion
c. The percent saturation of hemoglobin
d. The thickness of the respiratory membrane
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Domanda del libro di testo
When the alveolar Pco₂ decreases, the pulmonary arterioles_____. When the arteriolar Pco₂ increases, the bronchioles_______.
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Domanda del libro di testo
Henry's law states that the degree to which a gas dissolves in a liquid is determined by its:
a. Partial pressure
b. Solubility
c. Surface tension
d. Both a and b are correct
e. All of the above are correct
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Domanda del libro di testo
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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Domanda del libro di testo
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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