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Ch. 17 Blood
Marieb - Human Anatomy & Physiology 11th Edition
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMarieb, Hoehn 11th EditionCh. 17 BloodProblema 9
Capitolo 17, Problema 9

The normal pH of the blood is about:
a. 8.4
b. 7.8
c. 7.4
d. 4.7

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1
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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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.
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Percorso guidato
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.
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Percorso guidato
01:29
Acids 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.
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Percorso guidato
07:58
pH Scale
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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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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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What is a transfusion reaction, and why does it happen?

What are its possible consequences?

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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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The blood cell that can become an antibody-secreting cell is:

a. Lymphocyte

b. Megakaryocyte

c. Neutrophil

d. Basophil

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