A DRG Is

question 2

Multiple Choice

A DRG is:

• A) A scanned version of a USGS topo map
• B) A digitized version of features on a USGS topo map
• C) A remotely sensed image overlaid on a USGS topo map
• D) An aerial photo that covers the same area as a USGS topo map

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Definitions:

Neurons

The fundamental units of the brain and nervous system, responsible for receiving sensory input, sending motor commands to muscles, and processing and transmitting neural impulses throughout the body.

Middle Ear

The part of the ear between the eardrum and the oval window that contains the three small bones (ossicles) involved in transmitting sound to the inner ear.

Hammer, Anvil, Stirrup

Three tiny bones in the middle ear that play a crucial role in the process of hearing.

Hertz

The unit of frequency in the International System of Units (SI), equal to one cycle per second, used to measure the frequency of waves.