Anatomy Chapter 17

Front 1

this is the pathway from the motor neuron and axon to the skeletal muscle for the somatic motor system

Back 1

spinal cord--> ventral root --> spinal nerve --> ventral ramus or dorsal ramus --> skeletal muscle

Front 2

this is the visceral motor system
- regulates body temperature
-coordinates many system functions including
... cardiovascular
... respiratory
...digestive
...excretory
...reproductive

routine physiological adjustments made subconsciously

Back 2

autonomic nervous system

Front 3

what 3 things does the ANS innervate?

Back 3

smooth muscle
cardiac muscle
glands

Front 4

this is the thoracolumbar system part of the ANS

Back 4

sympathetic system

Front 5

this is the craniosacral system part of the ANS

Back 5

parasympathetic system

Front 6

this visceral motor neuron system is in the CNS
- axon is preganglionic fiber
- axons synapse on postganglionic neuron

Back 6

preganglionic neuron

Front 7

this visceral motor neuron system is in ganglia outside the CNS
- axon is postganglionic fiber

Back 7

postganglionic neuron

Front 8

this motor system innervates skeletal muscle and has only one neuron system

Back 8

somatic motor

Front 9

this motor system innervates smooth muscle, cardiac muscle, and glands and has two neuron systems

Back 9

visceral motor ANS

Front 10

name this system:

- preganglionic neuron is located in lateral horn of spinal cord segments T1- L2
- preganglionic axons leave spinal cord by ventral root and travel through white ramus to synapses on postganglionic neurons in the sympathitic chain and the collateral ganglia

Back 10

sympathetic division

Front 11

name the system:

- postganglionic neurons give rise to postganglionic axons that will

...return to spinal nerve via gray ramus to eventually innervate
a. sweat glands in skin
b. blood vessels in skin
c. erector pili muscle in skin (makes hair stand up)

- go to organs in plexuses

Back 11

sympathetic system

Front 12

this system prepares body to deal with emergencies-- fight or flight system , stimulate tissue metabolism, increase alertness

Back 12

sympathetic system

Front 13

name the system:

preganglionic neurons are located in nuclei of brainstem in the cranial division

Back 13

parasympathetic system

Front 14

what are the 4 ways the preganglionic axons leave the brain stem?

Back 14

1. oculomotor nerve (III)
2. facial nerve (VII)
3. glossopharyngeal nerve (IX)
4. vagus nerve (X)

Front 15

this nerve carries preganglionic axons from brain stem to travel to ciliary gangion --> synapse o postganglionic neurons

- constriction of iris

Back 15

ocumotor nerve

Front 16

this nerve carries preganglionic axons from brain stem to travel to either submandibular or pterygopalatine ganglia to synapse on postganglionic neurons

- secretion of salivary glands
- secretion of lacrimal glands
- secretion of nasal and glands

Back 16

facial nerve

Front 17

this nerve carries preganglionic axons from brain stem to travel to otic ganglion to synapse on postganglionic neurons
- secretion of salivary gland

Back 17

glossopharyngeal nerve

Front 18

this nerve carries preganglionic axons from brain stem to travel to synpase on postganglionic neurons within the walls of organs such as the heart, lungs, stomach, small intestines, and part of large intestives where they synapse on postganglionic neurons...
- regulation of function of organ

Back 18

vagus nerve

Front 19

name the system:

-preganglionic neurons located S2, S3, S4 spinal cord segments (sacral divison)

- preganglionic axons leave the spinal cord through the ventral root and travel via pelvic nerves to synapse on postganglionic neurons in the walls of organs: lower part of the large intestines, bladder, and reproductive organs.
- regulation of function of organ
- controls and regulates vegetative functions (conserves energy)

Back 19

parasympathetic system

Front 20

in the sympathetic division, where are preganglionic neurons ?

Back 20

lateral horn of spinal cord segments T1 and L2

Front 21

in the sympathetic division, where are postganglionic neurons?

Back 21

ganglia in sympathetic trunk/ chain near vertebral column

Front 22

in the sympathetic division, where are collateral ganglia (prevertebral ganglia)

Back 22

in abdominal cavity

Front 23

this division has specialized neurons within the adrenal gland

Back 23

sympathetic division

Front 24

how many pairs of white communicating rami carry sympathetic preganglionic fibers to sympathetic trunk/ chain

Back 24

14 pairs

Front 25

the function of this system is conserving energy and promoting sedentary activities... "rest and repose"

Back 25

parasympathetic system

Front 26

this division is responsible for:
- pupil constriction
- digestive gland secretion
- hormone secretion for nutrient absorption
- increased digestive tract activity
- defecation activity
- urination activity
-respiratory passage constriction
-sexual arousal
- reduced heart rate

Back 26

parasympathetic

Front 27

this occurs when lesions anywhere along the sympathetic pathway cuases
- miosis- constricted pupil
- decreased sweating
- vasodlation
- partial ptosis

Back 27

Horner's syndrome

Front 28

what do ALL preganglionic fibers release at terminals?

Back 28

acetylcholine

Front 29

what do postganglionic parasympathetic fibers release at terminals?

Back 29

acetylcholine

Front 30

what do postganglionic sympathetic fibers release at terminals?

Back 30

norepinephrine/ epinephrine