Exercise 2. Read the sentences and correct them if necessary:
1. A neuron is the basic structural unit of the nervous system.
2. The central nervous system has two subdivisions: the somatic system
and the autonomic system.
3. The sympathetic system is involved primarily in quiet, recuperative

functions.
4. The parasympathetic system is involved in aroused, or excited activity.
5. The brain as well controls many simple functions: perception, memory.
6. The autonomic system sends messages to motor nerve fibres to get the
muscles to move the body.

The sentence is correct.
The sentence is correct.
The sentence is incorrect. The sympathetic system is actually involved primarily in the body's response to stress or danger, often called the "fight or flight" response.
The sentence is incorrect. The parasympathetic system is actually involved in resting and digesting functions.
The sentence is incorrect. The brain controls many complex functions, including perception and memory.
The sentence is incorrect. The autonomic system controls involuntary functions such as heart rate, breathing, and digestion. It does not directly control movement of muscles.