During the Exchange of O₂ and CO₂ in Systemic Capillaries

question 32

Multiple Choice

During the exchange of O₂ and CO₂ in systemic capillaries, H⁺ combines with HCO₃⁻ inside erythrocytes to form H₂CO₃. What happens to this H₂CO₃?

• A) it splits into CO₂ and H₂O
• B) it splits into CO₂, H₂, and O^-
• C) it reacts with Cl₂ to form HCl and CO₂
• D) it reacts with H⁺ to form HCO₃⁻ and O₂
• E) it splits into CO and H₂O₂

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Definitions:

Transduction

The process of converting one form of energy into another, as in sensory organs transforming physical stimuli into nerve signals.

Sensitization

The process of becoming more receptive or sensitive to a stimulus after repeated exposure to it.

Distal Stimuli

Objects and events in the external world that provide sensory input, as opposed to the sensory signals (proximal stimuli) actually perceived by the senses.

Psychophysics

The branch of psychology that deals with the relationships between physical stimuli and sensory perceptions and responses.