__________ Sensors Project and Detect an Infrared Beam Across an Area

question 46

Multiple Choice

__________ sensors project and detect an infrared beam across an area.

• A) Photoelectric
• B) Smoke 
• C) Air-aspirating
• D) Thermal

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Definitions:

Nervous System

The part of an organism that coordinates its actions by transmitting signals to and from different parts of its body.

Reproductive System

The system of organs and structures in organisms that work together for the purpose of reproduction.

Endocrine System

The collection of glands that produce hormones to regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

Hormones

Chemical messengers secreted by endocrine glands that regulate various physiological processes in the body.