Question

1. match the concept with the correct section of the nervous system. place the correct number on each line. use each number only once.

the central nervous system (cns)
antagonistic
peripheral nervous system
parasympathetic nervous system
autonomic nervous system (ans)
sensory - somatic nervous system
sympathetic nervous system

1. part consisting of the brain and spinal cord
2. part of the peripheral nervous system; involuntary control; controls glandular secretions (enzymes, hormones) and the function of smooth and cardiac muscles
3. voluntary control; sense receptors send messages to the cns and impulses travel from the cns to effectors (muscles)
4. division of the autonomic nervous system; activated when the body is calm, at rest and digesting a meal; works in opposition to the sympathetic ns
5. in general, the part sending sensory messages to cns and sending motor messages to muscles and glands
6. division of the autonomic nervous system activated in emergencies and in times of stress; works in opposition to the parasympathetic ns
7. two systems, glands and/or muscles that function in opposition to each other
8. the structural and functional unit of the nervous system is the

a. neuron
b. glial cells
c. motor nerves
d. sensory nerves

Explanation:

The central nervous system (CNS) consists of the brain and spinal cord, so it matches with 1. The sympathetic and parasympathetic nervous systems are antagonistic and are divisions of the autonomic nervous system. The parasympathetic nervous system is active when the body is calm and opposes the sympathetic nervous system which is activated in emergencies. The autonomic nervous system controls involuntary functions like glandular secretions and smooth - cardiac muscle function. The sensory - somatic nervous system has voluntary control with sense receptors sending messages to the CNS and impulses going to effectors.

Answer:

• the central nervous system (CNS): 1
• antagonistic: 7
• peripheral nervous system: 5
• parasympathetic nervous system: 4
• autonomic nervous system (ANS): 2
• sensory - somatic nervous system: 3
• sympathetic nervous system: 6

For the multiple - choice question:
The structural and functional unit of the nervous system is the neuron. So the answer is A. neuron