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254 midterm > nervous system organization > Flashcards

nervous system organization Flashcards

1
Q

is efferent motor or sensory

A

motor

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2
Q

is afferent motor or sensory

A

sensory

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3
Q

what is the difference btw visceral and somatic

A

somatic is conscious and voluntary movements whereas visceral is unconscious and unvoluntary

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4
Q

what is the imput receiving portion called

A

dendrites

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5
Q

what are the three main functions of the nervous system

A

sensory function, integrative function and motor function

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6
Q

what does sensory function do

A

detect internal and external stimuli and carries info to the brain via sensory neurons

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7
Q

what does integrative function do

A

processes sensory info, analyzing and making decisions regarding appropriate responses and this is done by interneurons

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8
Q

what does motor function do

A

responds to integration decision, neurons that serve this function are motor (efferent) neurons, carry info out of the brain and spinal cord

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9
Q

sensory info goes through what in the spinal cord

A

exits through the dorsal root

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10
Q

the central nervous system controls which structures

A

brain and spinal cord (connects the brain to the rest of the body)

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11
Q

the peripheral nervous system controls divides into what 2 subdivisions

A

the autonomic division and the somatic division

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12
Q

what does the autonomic division regulate

A

it regulates the internal environment and so it carries the info from the CNS to organs, blood vessels and glands

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13
Q

what does the somatic division regulate

A

carries info to the CNS from the senses and from theCNS to the skeletal muscles (only these and nothing else)

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14
Q

the autonomic division splits into what 2 subdivisions

A

sympathetic (arouses the body) and parasympathetic (calms after arousal)

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15
Q

what system includes the brain and spinal cord and is the control center for the entire ns

A

central nervous system

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16
Q

what system processes and integrates sensory info as well as plans and coordinates responses to stimuli and provides short term control over activities of other systems

A

central nervous system

17
Q

what system is neural tissue outside the cns and links it to sense organs and other systems

A

peripheral nervous system

18
Q

what system has nerves that have an efferent and afferent division as well as has cranial n emerging from the brain and spinal n emerging from the sc

A

peripheral nervous system

19
Q

the efferent portion of the pns is subdivided into what 2 systems

A

somatic ns and autonomic ns

20
Q

the sns controls what

A

skeletal m contractions (voluntary and involuntary)

21
Q

sensory neurons convey info from cutaneous and special senses where

A

primarily in the head, body wall and extremities

22
Q

motor neurons from the cns conduct impulses where

A

to skeletal muscles ONLY

23
Q

which system only has 1 continuous neuron

A

sns

24
Q

the ans controls what

A

visceral function

regulates smooth m, cardiac m. and glandular activity

25
Q

which system is outside of our conscious control

A

ans

26
Q

which system has a preganglionic and a postganglionic neuron

A

ans

27
Q

sensory neurons in the ans convey homeostatic info from receptors to the cns located where primarily

A

in the viscera

28
Q

the motor portion of the ans conducts impulses to what and what are its 2 pathways

A

smooth m, cardiac m and glands

sympathetic and parasympathetic

29
Q

what are the two main types of cells in the nervous system and what is their functions

A

neurons; nerve impulse conduction

neuroglia; support and protect the ns

30
Q

what are the 3 types of neurons

A

multipolar, bipolar and unipolar

31
Q

what are the types of neuroglia found in the cns (4)

A

astrocytes, oligodendrocytes, microglia and ependymal cells

32
Q

what are the types of neuroglia found in the pns

A

satellite and schwann cells

33
Q

what are microglial cells

A

wandering cells that remove worn out cells and debris

34
Q

what are ependymal cells

A

they make and protect csf, they line the ventricles

35
Q

what are oligodendrocites

A

myelinated axons in the cns

36
Q

what are protoplasmic astrocytes

A

wrap around vessels, protect from waste and make uo the blood brain barrier

37
Q

what are schwann cells

A

they make up the myelin around axons in the pns

38
Q

what are satellite cells

A

they bring nutrients in and they wrap around cell bodies

they have a structural function

39
Q

what system is considered as the brain of the GI tract

A

the enteric nervous system

254 midterm (11 decks)

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