Parathyroid Cells Are Inhibited from Synthesizing and Releasing PTH When

question 19

Multiple Choice

Parathyroid cells are inhibited from synthesizing and releasing PTH when circulating calcium levels are high.When calcium levels fall,the inhibition is removed,PTH is synthesized and released,and calcium levels rise in the blood until the parathyroid cells are once again inhibited.This process is an example of

• A) negative feedback.
• B) induction.
• C) down regulation.
• D) up regulation.
• E) positive feedback.

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Definitions:

Sensory Information

Data obtained by the senses, which play a crucial role in allowing the brain to understand and interact with the environment.

Transduction

The process of converting one form of energy into another, as in sensory transduction where physical signals are transformed into neural signals.

Color Constancy

is the perceptual phenomenon by which the colors of objects remain relatively constant under varying illumination conditions.

Bright Sunlight

Bright sunlight is intense sunlight that can influence mood, vitamin D synthesis, and visibility conditions.