INTRO TO ANS PCOG PART1

Question 1

AKA Nerve cells

Answer 1

Neurons

Question 2

possess electrical excitability- the ability to respond to a stimulus and convert it to action potential

Answer 2

Neurons

Question 3

Parts of a neuron

Answer 3

a cell body
dendrites (nerve fiber)
an axon (nerve fiber)

Question 4

2 types of peripheral nervous system

Answer 4

sensory division
motor division

Question 5

parts of sensory division

Answer 5

somatic senses
special senses

Question 6

parts of motor division

Answer 6

somatic nervous system
-involve with voluntary responses (consciously doing)

automatic nervous system
- controls involuntary response
- divided into 3: Sympathetic, Parasympathetic, and Enteric nervous system

Question 7

Smooth muscle, cardiac muscle, and glands

Answer 7

sympathetic and parasympathetic

Question 8

smooth muscle and glands in GI tract

Answer 8

Enteric

Question 9

-integrative function
- source of thoughts, emotions, and memories
-brain + spinal cord

Answer 9

CNS

Question 10

all nervous tissue outside the CNS

Answer 10

PNS

Question 11

Has nerves- bundles of axons
-12 pairs of cranial nerves from the brain
-31 pairs of spinal nerves from the spinal cord

Answer 11

PNS

Question 12

2 divisions
-sensory (afferent) division
-motor (efferent) division

Answer 12

PNS

Question 13

conveys input from sensory receptors to CNS

Answer 13

sensory (afferent) division

Question 14

two divisions in sensory (afferent) divisions

Answer 14

somatic senses
-touch, temperature, pain and sensations

special senses
-sights, smell, hearing, taste, and balance (equilibrium)

Question 15

convey output from the CNS to effectors (muscle and glands)

Answer 15

motor (efferent) division

Question 16

2 divisions in motor (efferent) division

Answer 16

Somatic nervous system
- conveys output from the CNS to skeletal muscle (voluntary)
-from somatic senses and special senses

Autonomic nervous system
-conveys output from the CNS to smooth muscle, cardiac muscle, and glands (involuntary)
-mainly from interoceptors, some from somatic senses and special senses

Question 17

parts of Autonomic nervous system

Answer 17

sympathetic (sns)
parasympathetic (pns)
enteric (ens)

Question 18

fight or flight responses

Answer 18

SNS

Question 19

rest and digest activities

Answer 19

PNS

Question 20

regulate the activity of the smooth muscle and glands of the GI tract, has innervation from both the sympathetic and parasympathetic nervous system

Answer 20

ENS

Question 21

Skeletal muscle contracts

Answer 21

Somatic Nervous System

Question 22

Target tissue are stimulated or inhibited

Answer 22

Autonomic Nervous System

Question 23

Group of cell body

Answer 23

GANGLION

Question 24

Group of Axons

Answer 24

NERVE

Question 25

Loc: Neuron cell bodies are in motor nuclei of the cranial nerves and the ventral horn of the spinal cord (cns)

Answer 25

Somatic Nervous System

Question 26

Loc: Preganglionic neuron cell bodies are in autonomic nuclei of the cranial nerves and in the lateral part of the spinal cord; postganglionic neuron cell bodies are in autonomic ganglia

Answer 26

Autonomic Nervous System

Question 27

autonomic motor pathways (preganglionic neuron)

Answer 27

- cell body in the CNS (brain or SC) - axon exits the CNS as CN or SN' - small-diameter, myelinated fibers - synapses with postganglionic neuron

Question 28

autonomic motor pathways (postganglionic neuron)

Answer 28

- cell body in the autonomic ganglion - small diameter, unmyelinated fibers - synapses with visceral effector (smooth/ cardiac muscle, glands)

Question 29

Sympathetic Division -cell bodies in the lateral horns of the twelve thoracic and 1st two lumbar segments of the DC (thoracolumbar) Parasympathetic Division -cell bodies in the nuclei of the four CNS in the brainstem (3, 7, 9, 10) and in the lateral gray horns of the 2nd to 4th sacral segments of the SC (craniosacral) (pneumonic 1973)

Answer 29

Preganglionic Neuron (fibers)

Question 30

Sympathetic trunk ganglia -lie in a vertical row on either side of the vertebral column from the base of the skull to the coccyx -postganglionic axons innervate organs above the diaphragm Prevertebral ganglia -lie anterior to the vertebral column close to large abdominal arteries -postganglionic axons innervate organs below the diaphragm

Answer 30

Sympathetic Division in autonomic ganglia

Question 31

Lie close to or within the wall of visceral organs

Answer 31

Parasympathetic Division in autonomic ganglia

Question 32

-most sympathetic preganglionic axons are short and most sympathetic postganglionic axons are long -may be many for each preganglionic neuron

Answer 32

Sympathetic Division in postganglionic

Question 33

-most parasympathetic preganglionic axons are long and most parasympathetic postganglionic axons are short -few for each preganglionic neuron

Answer 33

Parasympathetic Division in autonomic ganglia

Question 34

Root of sympathetic/ adrenergic

Answer 34

Thoracolumbar (T1-T12, L1-L2)

Question 35

Root of Parasympathetic

Answer 35

Craniosacral (CN 3,7,9, &10* , S2-S4)