Which of the Following Is NOT One of the Categories

question 1

Multiple Choice

Which of the following is NOT one of the categories used in the book to classify fitness?

• A)high-performance zone
• B)good fitness zone
• C)marginal zone
• D)poor fitness zone

---

Definitions:

Cell body

The part of a neuron that contains the nucleus and most of the cytoplasm and organelles.

Axons

Long, thin fibers that are part of nerve cells (neurons), responsible for transmitting electrical impulses away from the neuron's cell body.

Myelin

A fatty substance that insulates the axon and allows it to send nerve impulses quickly.

Schwann cells

Specialized cells located in the peripheral nervous system, responsible for the formation of myelin sheaths around neurons, facilitating rapid signal transmission.