Chapter 1.92 (page 20)

Question 1

_____________: Whereas the SNS expends energy, the __________ slows body functions down to conserve energy.
This system tends to slow down heartbeat and increase peristalsis and digestive juice
secretion in the GI tract.

Answer 1

Parasympathetic Nervous System

PSNS

Question 2

In the PSNS, the preganglionic neuron synapses with ______________, which
terminates at __________.

Answer 2

only one postganglionic neuron

only one organ

Question 3

_______________ is sometimes
called the ‘rest and digest’ system and is chiefly concerned with keeping our body energy as
low as possible, even as it directs vital activities such as digestion and elimination.

Answer 3

parasympathetic division

Question 4

Preganglionic neurons come from the _____________ areas

of the body

Answer 4

cranial and sacral

Question 5

Preganglionic neurons extend some distance, before
terminating in the ________________, located in the
thoracic and abdominal cavities, close to the organs they
innervate.

Answer 5

parasympathetic ganglia

Question 6

Postganglionic neurons lie in the outlying parasympathetic
ganglia and their short axons extend into nearby structures.
Each parasympathetic preganglionic neuron synapses, _________, to _______________

Answer 6

only with postganglionic neurons

a single effector.

Question 7

Cranial nerves __________. Sacral nerves ________ form the PSNS

Answer 7

3, 7, 9 &10

S2 S3 S4

Question 8

_____________ are
The final neurotransmitter released from the axon at the neuron adjacent to the effector
organ is different for the SNS and the PSNS.

Answer 8

Autonomic Neurotransmitters

Question 9

In the SNS, a common neurotransmitter released, is
__________ (from an andrenergic fiber) whereas a common chemical released by the
terminal neurons in the PSNS, is ___________(from a cholinergic fiber).

Answer 9

norepinephrine

acetylcholine

Question 10

Autonomic Nervous System regulate the body’s autonomic, _______________, in order to
maintain or quickly return the body’s internal environment to ___________.

Answer 10

involuntary functions

homeostasis

Question 11

most internal organs of the body are doubly innervated by the ANS; i.e. nerve fibers of both
the__________ are located on the effector organ.

Answer 11

SNS and PSNS

Question 12

the ________ of neurotransmitters
released by both systems, determines how the effector organ will respond. These two systems
are ______ or ________ the opposite response of an effector organ; e.g., acetylcholine
secreted by the PSNS will slow the heartbeat down, whereas the release of norepinephrine by
the SNS will ________ the heartbeat.

Answer 12

balance
antagonistic or trigger
speed up

Question 13

the ________ of neurotransmitters
released by both systems, determines how the effector organ will respond. These two systems
are ______ or ________ the opposite response of an effector organ; e.g., acetylcholine
secreted by the PSNS will slow the heartbeat down, whereas the release of norepinephrine by
the SNS will ________ the heartbeat.

Answer 13

balance
antagonistic or trigger
speed up