Textbook Question
Suppose your blood is AB positive. This means that:
a. Agglutinogens A and B are present on your red blood cells
b. There are no anti-A or anti-B antibodies in your plasma
c. Your blood is Rh⁺
d. All of the above
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Ch. 17 Blood
Marieb, Hoehn7th EditionHuman Anatomy & PhysiologyISBN: 9780805359091
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Table of contents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units24
- Ch. 4 Tissue: The Living Fabric19
- Ch. 5 The Integumentary System10
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton11
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue23
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity28
- Ch. 14 The Autonomic Nervous System18
- Ch. 16 The Endocrine System26
- Ch. 17 Blood27
- Ch. 18 The Cardiovascular System: The Heart22
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues16
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses29
- Ch. 22 The Respiratory System20
- Ch. 23 The Digestive System30
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System25
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System23
Marieb, Hoehn7th EditionHuman Anatomy & PhysiologyISBN: 9780805359091Not the one you use?Change textbook
Chapter 16, Problem 9
The normal pH of the blood is about:
a. 8.4
b. 7.8
c. 7.4
d. 4.7
Verified step by step guidance1
Understand that blood pH is a measure of how acidic or basic the blood is, with 7 being neutral on the pH scale.
Recall that normal human blood pH is slightly basic, meaning it is just above 7 on the pH scale.
Eliminate options that are too acidic (below 7) or too basic (much higher than normal physiological range).
Recognize that the typical normal blood pH is tightly regulated around 7.4 to maintain proper physiological function.
Conclude that among the given options, the value closest to the normal blood pH is 7.4.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Normal Blood pH Range
The normal pH of human blood is tightly regulated between 7.35 and 7.45, with an average around 7.4. This slightly alkaline range is essential for proper cellular function and metabolic processes.
Recommended video:
07:58
pH Scale
Acid-Base Balance
Acid-base balance refers to the mechanisms the body uses to maintain blood pH within the normal range. It involves buffers, respiratory control of CO2, and renal regulation of bicarbonate to prevent acidosis or alkalosis.
Recommended video:
01:29Acids and Bases
Physiological Importance of pH
Maintaining blood pH near 7.4 is crucial because enzyme activity, oxygen transport, and electrolyte balance depend on it. Deviations can lead to serious health issues like acidosis or alkalosis, affecting organ function.
Recommended video:
07:58pH Scale
Related Practice
Textbook Question
List the three major categories of formed elements
Which is least numerous?
Which comprise(s) the buffy coat in a hematocrit tube?
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The white blood cell that releases histamine and other inflammatory chemicals is:
a. Basophil
b. Neutrophil
c. Monocyte
d. Eosinophil
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Textbook Question
What is a transfusion reaction, and why does it happen?
What are its possible consequences?
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Textbook Question
Which of the following does not promote multiple steps in the clotting pathway?
a. Platelet phospholipids
b. Factor XI
c. Thrombin
d. Ca²⁺
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Textbook Question
The blood cell that can become an antibody-secreting cell is:
a. Lymphocyte
b. Megakaryocyte
c. Neutrophil
d. Basophil
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