Chapter 11

Question 1

Efferent division

Answer 1

Sends the information from the nervous system to the organs of the body which carry out the appropriate response

Question 2

Targets of the autonomic motor system

Answer 2

Targets cardiac and smooth muscles as well as glandular tissue

Question 3

Targets of the somatic motor systems

Answer 3

Solely based on skeletal muscle contractions

Question 4

Why are fight or flight terms used when the sympathetic system is dominant ?

Answer 4

Brain triggers massive simultaneous sympathetic discharge throughout body. As body prepares to fight or flee.

Question 5

Why is the term rest and digest used in the parasympathetic system dominates?

Answer 5

If you are resting, parasympathetic is dominant, taking command of the routine, quiet activities of day-to-day living such as digestion.

Question 6

Preganglionic neuron

Answer 6

Originates in the central nervous system, projects into the autonomic ganglion

Question 7

Autonomic ganglion

Answer 7

Outside the CNS, a cluster of nerve cell bodies

Question 8

Postganglionic neuron

Answer 8

Preganglionic neuron synapses with the second neuron in the pathway.

Question 9

List structural differences between sympathetic and parasympathetic system

Answer 9

?

Question 10

Varicosity

Answer 10

Swollen regions along autonomic axons store and release neurotransmitter

Question 11

Describe autonomic synapses

Answer 11

All autonomic pathways consist of two neurons in a series.

Preganglionic neuron - originates in the central nervous system
Projects to Autonomic Ganglion
Autonomic ganglion-

Postganglionic neuron - this neuron has its cell body in the ganglion and projects its axon to the target tissue

Question 12

Explain how autonomic synapses can lead to coordinated behaviors among cell targets

Answer 12

On average one preganglionic entering a ganglion synapse with 8 or 9 postganglionic neurons. Each postganglionic may then innervate different target.

A single signal form CNS can affect large number of target cells simultaneously.

Question 13

Where does the preganglionic neuron originate ? Where does in go?

Answer 13

In the central nervous system. And projects into an autonomic ganglion outside of the CNS

Question 14

Where does the preganglionic neuron synapse with the second neuron in the pathway called the postganglionic neuron?

Answer 14

Outside the CNS