Question

Which of the following is not a characteristic of the human sympathetic nervous system?

• A. Prepares the person for fight or flight
• B. Has ganglia near the spinal cord
• C. Increases heart beat
• D. Is a craniosacral division of the autonomic nervous system

Answer 1

Answer: (D)

Is a craniosacral division of the autonomic nervous system

The human sympathetic nervous system controls the functions (for example accelerated heartbeat, reduced digestion rate etc) that help prepare the organism for the physical strain which is required to escape from a dangerous situation.

The preganglionic fibres of sympathetic nervous system arise from thoracic lumbar portion of spinal cord and immediately terminate in ganglia lying near the cord.

Under stress conditions, preganglionic neurons of this system release acetylcholine which in turn makes postganglionic neurons to release norepinephrine causing increased heart beat.

Sympathetic nervous system is thoracic lumber division of autonomous nervous system. The parasympathetic system is its sacral division

So, the correct answer is 'Is a craniosacral division of the autonomic nervous system'