Chapter 18

Front 1

What is another name for the autonomic nervous system?

Back 1

The Visceral Motor Division

Front 2

Is the autonomic nervous system considered the CNS or the PNS?

Back 2

PNS

Front 3

Is the autonomic Nervous system considered afferent (sensory) or efferent (motor)?

Back 3

Efferent (motor)

Front 4

What types of effectors are controlled byt the autonomic servous system? (name 3)

Back 4

cardiac muscle
smooth muscle
glands

Front 5

What is the main controller of the autonomic nervous system?

Back 5

Hypothalamus

Front 6

What are the 2 divisions of the autonomic nervous system?

Back 6

Sympathetic (rest and digest)and parasympathetic (fight or flight)

Front 7

Are the somatic and autonomic nervous systems both efferent?

Back 7

Yes

Front 8

Of the somatic and autonomic nervous systems which is under concious control and which is not?

Back 8

Autonomic is not under concious control (autonomic=automatic) and somatic is under concious control.

Front 9

Name 5 functions that the autonomic nervous system controls.

Back 9

cardivascular function
Respiratory function
Digestive function
Urinary Function
Reproductive function

Front 10

Skeletal muscle is stimulated by what part of the nervous system?

Back 10

Somatic nervous system

Front 11

What innervates cardiac muscle, smooth muscle and glads?

Back 11

The autonomic nervous system

Front 12

How many motor neurons are used from the CNS to the effector organ in the somatic nervous system?

Back 12

One neuron

Front 13

How many motor neurons are used from the CNS to the effector organ in the autonomic nervous system?

Back 13

Two motor neurons.

Front 14

Why does the somatic nervous system only need one axon?

Back 14

THe axon is myelinated, so the conduction travels at high speeds.

Front 15

Are the axons in the autonomic nervous system myelinated?

Back 15

The pre-ganglionic axon is lightly myelinated, and the post ganglionic neuron is not myelinated.

Front 16

Where does the sympathetic division originate from on the spinal cord?

Back 16

Sympathetic division originates from the thoracic & lumbar regions.

Front 17

Where does the parasympathic division orginate from on the spinal cord?

Back 17

Parasympathetic division originates from the brain and the sacral region.

Front 18

Do the sympathetic and parasympathetic divisions innervate different organs or the same organs?

Back 18

They innervate the same organs, but under different circumstances.

Front 19

Sympathetic system is responsible for the motor innervation of what?

Back 19

Motor innervation of cardiac muscle, smooth muscle, and glands in "fight or flight" mode.

Front 20

Parasympathetic system is responsible for the motor innervation of what?

Back 20

Motor innervation of cardiac muscle, smooth muscle and glands in routine maintenance situations. "Rest and digest" mode.

Front 21

Which nerve fiber is long and which is short in the sympathetic system?

Back 21

The preganglionic fiber is short and the post ganglionic is long in the sympathetic division. This is so the ganglia is close to the spinal cord.

Front 22

Which nerve fiber is long and which is short in the parasympatheic system?

Back 22

The preganglionic fiber is long and the post ganglionic fiber is short. The ganglia on this are close to or on the effector organ.

Front 23

What type of neurotransmitter does a nerve in the sympathetic division release?

Back 23

Sympathetic releases norepinephrine

Front 24

What type of neurotransmitter does a nerve in the parasympathetic division release?

Back 24

Parasympatheic releases acetylcholine.

Front 25

Fact:

Back 25

Each type of neurotransmitter (norepiniephrine and acetylocholine) can eithe excite or inhibit the effector organ depending on the receptors present.

Front 26

Name an activity caused by parasympathetic system from this nerve:
Oculomotor nerve (III)

Back 26

It causes the smoot muscle in the eye to constrict and the pupil to contract. This is responsible for focusing.

Front 27

Name an activity caused by parasympathetic system from this nerve:
Facial nerve (VII)

Back 27

This causes most glandular secretion in the head- tear, nasal, and salivary.

Front 28

Name an activity caused by parasympathetic system from this nerve:
Glossopharyngeal nerve (IX)

Back 28

This innervates the large salivary gland. (Parietal)

Front 29

Name an activity caused by parasympathetic system from this nerve:
Vagus Nerve (X)

Back 29

This innervates the organs of the thorax and most of the abdomen. Everthing except the distal portion of the large intestine.

Front 30

Name an activity caused by parasympathetic system from this nerve:
The Sacral region of the spinal cord

Back 30

It innervates the organs oin the pelvis, and the distal portion of the large intestine, bladder and reproductive organs.
Defication, urination and erection.

Front 31

Name activities caused by sympathetic system:

Back 31

Causes vasoconstriction of most vessels, inhibits activity of digestive organs and glands, Stimulates sweat glands, stimulates adrenal medulla to release epinephrine into the bloodstream, stimulates cardiac muscle, and causes dialation of bronchioles.