A Behavioural Physiologist Is Studying the Homeostatic Control of Blood

question 37

Multiple Choice

A behavioural physiologist is studying the homeostatic control of blood pH. In a trial, a lizard runs on a treadmill for a set amount of time and the blood pH is measured. The blood pH drops as carbon dioxide is released into the bloodstream. Which component of the homeostatic feedback system is responsible for determining whether the blood pH is far enough from normal that a response is necessary?

• A) effector
• B) integrator
• C) assimilator
• D) sensor

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Definitions:

Frontal Cortex Maturation

The process of development and strengthening of the frontal cortex, a brain region essential for decision making, impulse control, and critical thinking, typically reaching full maturity in early adulthood.

Axons

Long fiber-like parts of a nerve cell that are involved in transmitting electrical signals from the cell body to other cells.

Corpus Callosum

A large bundle of nerve fibers that connects the left and right hemispheres of the brain, facilitating interhemispheric communication.

Lateralization

The tendency for some neural functions or cognitive processes to be more dominant in one hemisphere of the brain than the other.