The Following Questions Refer to the Data Shown Below Figure 421
-Hydrogen Ions Produced in Human Red Blood Cells Are

question 21

Multiple Choice

The following questions refer to the data shown below.
Blood entering a capillary bed of a vertebrate was measured for the pressures exerted by various factors.
$$\begin{array} { l c c } & \begin{array} { c } \text { Arterial End of } \\\text { Capillary Bed }\end{array} & \begin{array} { c } \text { Venous End of } \\\text { Capillary Bed }\end{array} \\\hline \text { Hydrostatic pressure } & 10 \mathrm {~mm} \mathrm { Hg } & 14 \mathrm {~mm} \mathrm { Hg } \\\text { Osmotic pressure } & 26 \mathrm {~mm} \mathrm { Hg } & 26 \mathrm {~mm} \mathrm { Hg } \\\mathrm { PO } _ { 2 } & 100 \mathrm {~mm} \mathrm { Hg } & 42 \mathrm {~mm} \mathrm { Hg } \\\mathrm { PCO } _ { 2 } & 40 \mathrm {~mm} \mathrm { Hg } & 46 \mathrm {~mm} \mathrm { Hg }\end{array}$$
Figure 42.1
-Hydrogen ions produced in human red blood cells are prevented from significantly lowering pH by combining with

• A)hemoglobin.
• B)plasma proteins.
• C)carbon dioxide.
• D)carbonic acid.
• E)plasma buffers.

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Definitions:

Side-to-Side Comparison

A diagnostic approach where the function or structure of one side of the body is compared to the other to identify abnormalities.

Thorax

The part of the body between the neck and the abdomen, encased by the rib cage, and containing the heart and lungs.

Tactile Fremitus

The palpable vibration transmitted through the chest wall when a person speaks, used to assess the presence of lung and respiratory diseases.

Scapulae

The scapulae are the technical term for the shoulder blades, which are large, flat bones on the back side of the ribcage.