Central Chemoreceptors Detect a Decrease in PH in Interstitial Fluids

question 31

Multiple Choice

Central chemoreceptors detect a decrease in pH in interstitial fluids in the brain.What is the response of the medulla to maintain delivery of oxygen to cells?

• A)A feedback loop is initiated that indirectly increases parasympathetic activity which results in vasodilation and a decrease in blood pressure.
• B)A feedback loop is initiated that indirectly increases sympathetic activity which results in vasoconstriction and a rise in blood pressure.
• C)A feedback loop is initiated that indirectly decreases sympathetic activity which results in vasodilation and a decrease in blood pressure.
• D)A feedback loop is initiated that indirectly increases parasympathetic activity which results in vasoconstriction and a rise in blood pressure.

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Definitions:

Program Rung

A single line or command within a ladder logic diagram in PLC programming, representing a basic condition or operation.

Highlighted Instructions

Specific commands or guidelines emphasized for importance or for easy identification in programming and user documentation.

Logic Continuity

The principle that ensures a logical flow or sequence is maintained throughout a control program or system.

Ladder Diagram

A visual programming language that mimics a ladder's rungs, utilized for the programming of Programmable Logic Controllers (PLCs).