Mechanical Systems, Like Physiological Systems, Can Be Regulated to Maintain

question 177

Multiple Choice

Mechanical systems, like physiological systems, can be regulated to maintain homeostasis.Imagine an automated system that allows water to flow from a storage tank into a water bowl for your pet.In this system, the valve that opens when the water level drops below the desired water level is the

• A) sensor.
• B) effector.
• C) error signal.
• D) feedforward information.
• E) set point.

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Definitions:

Adjustable Opening

A mechanism or feature that allows the size of an opening to be altered or adjusted as needed.

Pupil

The opening in the center of the iris of the eye, which adjusts in size to regulate the amount of light reaching the retina.

Upside-down Image

The phenomenon where images projected onto the retina are perceived as upright due to the brain's processing, despite being inverted.

Retina

The light-sensitive layer of tissue at the back of the inner eye that converts light images into electrical signals sent to the brain.