A Single Motor Unit Typically Consists of

question 60

Multiple Choice

A single motor unit typically consists of

• A) equal numbers of slow oxidative, fast oxidative, and fast glycolytic fibers.
• B) mostly fast glycolytic fibers along with a few fast oxidative and slow oxidative fibers.
• C) only a single fiber type.
• D) a single muscle fiber and the motor neuron that innervates it.

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Definitions:

Groundwater

Water that is found underground in the cracks and spaces in soil, sand, and rock, which can form aquifers from which water can be extracted for use.

Ice Caps

Large mass of ice that covers less than 50,000 square kilometers of land area, usually found in high-latitude regions; smaller than ice sheets.

Rivers

Large natural streams of water flowing in a channel to the sea, a lake, or another such stream.

Atmosphere

The layer of gases surrounding a planet or moon, held in place by gravity, vital for sustaining life on Earth.