PNS

Question 0

what are the sensory receptors of the PNS?

Answer 0

specialized cells that detect things like T, pain, touch, pressure, light, sounds, odors etc

Question 1

what are the components of the PNS?

Answer 1

sensory receptors
nerves
ganglion

Question 2

what is a nerve in the PNS

Answer 2

a bundle of axons and their sheaths that connect the CNS to sensory receptors, muscles and glands

Question 3

how many pairs of cranial nerves? spinal nerves? where do they originate

Answer 3

12 pr, brain

31 pr, spinal cord

Question 4

what is a ganglion?

Answer 4

collection of neuron cell bodies outside the CNS

Question 5

what are the 2 divisions of the PNS

Answer 5

sensory (or afferent)

motor (or efferent

Question 6

what is a collection of neuron cell bodies outside the CNS called?

Answer 6

ganglion

Question 7

what are specialized cells that detect T, pain, touch, pressure, light, sound, odors?

Answer 7

sensory receptors

Question 8

what is a bundle of axons and their sheaths?

Answer 8

nerve

Question 9

what connects the CNS to sensory receptors, muscles and glands

Answer 9

nerves

Question 10

what direction does the sensory division of PNS travel?

Answer 10

from sensory receptor to CNS

Question 11

what direction does the AP travel in a motor neuron?

Answer 11

from CNS to effectors (muscle, glands)

Question 12

what subdivision of the PNS transmits AP from receptors to CNS?

Answer 12

sensory or afferent

Question 13

what subdivision of the PNS transmits AP from CNS to effector cell?

Answer 13

motor or efferent

Question 14

what are the subdivisions of the motor division of PNS?

Answer 14

somatic NS

autonomic NS

Question 15

describe the motor division of the PNS

Answer 15

from CNS to skeletal muscles
voluntary
single neuron system
neuromuscular junction is a synapse between neuron and skeletal muscle cell

Question 16

describe the autonomic subdivision of the motor division of the PNS

Answer 16

from CNS to smooth muscle, cardiac muscle, certain glands
involuntary
from CNS to ganglion, from ganglion to effector (2 neuron system)
further subdivided (sympathetic, parasympathetic, enteric)

Question 17

which division of the PNS is voluntary

Answer 17

somatic motor nervous system

Question 18

what are the subdivisions of the autonomic motor nervous system?

Answer 18

parasympathetic, sympathetic, enteric

Question 19

which division of the motor PNS is a single neuron system? double?

Answer 19

somatic

autonomic

Question 20

compare and contrast the autonomic nervous system and the somatic nervous system

Answer 20

both connect CNS to something periphery
somatic is voluntary, autonomic is involuntary
somatic is one nerve, autonomic is two nerves (synapse at ganlion)
somatic synapse with skeletal muscles, autonomic synapse with smooth muscle, certain glands
autonomic nervous system ifs further divided, somatic is not

Question 21

compare and contrast the control of the motor divisions of the PNS

Answer 21

somatic = voluntary
autonomic = involuntary

Question 22

define sympathetic subdivision of autonomic nervous system

Answer 22

prepares body for physical activity (fight or flight)

Question 23

define parasympathetic ANS

Answer 23

regulates resting or vegetative fn that are not critical for survival:
digesting food
emptying bladder

Question 24

define enteric ANS

Answer 24

with the wall of the digestive tract

Question 25

which division of the NS regulates fns not critical to survival?

Answer 25

parasympathetic

Question 26

which division of the NS regulates emptying of the urinary bladder

Answer 26

parasympathetic