Overview Flashcards

(39 cards)

0
Q

Define nervous system

A

Network of fibres permeating body, coordinating voluntary and involuntary actions.
Transmits signals
Responds quickly to changes in internal/external environment

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1
Q

Two parts nervous system

A

CNS - brain, spinal cord

PNS - peripheral nerves

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2
Q

Sensory function carried out by which neuroma

A

Afferent

(Sensory) neutrons

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3
Q

Integrative function

Processing sensory information, analysing storing causing perception carried out by which neurons

A

Interneurons

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4
Q

Motor response

Impulse carried out by

A

Motor
Efferent
Neurons

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5
Q

3 PNS sensory receptors internal environment

A

Chemoreceptors
Baroreceptors
Osmoreceptors

Autonomic

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6
Q

Role of brain in CNS

A

Receives/processes sensory info
Initiates responses
Stores memories
Generates thoughts, emotions

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7
Q

Role spinal cord CNS

A

Conducts signals to/from brain

Controls reflex activities

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8
Q

Role of motor neurons PNS

A

CNS to muscles and glands

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9
Q

Role of sensory NEURONS CNS

A

Sensory organs to CNS

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10
Q

Motor neurons 2 categories

A

Somatic NS

Autonomic NS

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11
Q

Autonomic NS two types

A

Sympathetic

Parasympathetic

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12
Q

Role somatic NS

A

Controls voluntary movements

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13
Q

Role autonomic NS

A

Controls involuntary responses

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14
Q

Which tissues does ANS affect

A

Organs
Glands
Cardiac & smooth muscles

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15
Q

Sympathetic innervates

A

Thoraco-lumbar innervation

16
Q

Parasympathetic innervates

A

Cranio-sacral innervation

17
Q

5 examples of what ANS controls

A
Rate/force heart beat
Gland activity
Vessel diameter - vasoconstriction/dilation
Bronchi construction/dilation
Pupillary construction/dilation
18
Q

Enteric NS brain of

19
Q

How enteric NS relate to autonomic NS

A

Functions autonomously
Regulated by ANS

interacts extensively with CNS

20
Q

Enteric links with CNS sympathetic via

A

Pre-vertebral ganglia

21
Q

Enteric links with CNS parasympathetic via

22
Q

Role of sensory neurons in enteric NS

A

Monitor chemical changes via chemoreceptors
Monitors stretching via stretch receptors

Of GI Tract

23
Q

Motor neurons role in enteric NS

A

Govern motility and secretions of GI tract and ass glands

24
Role of interneuro a Gi Tract
Connect 2 plexus was
25
Enteric submucosal plexus contains
Sensory cells that communicate with myenteric plexus and motor fibres that stimulate secretion of fluids into the lumen
26
Enteric NS myenteric plexus contains
Neurons that regulate enzyme output of adjacent organs
27
What is an ion
Charged particle
28
Baroreceptors measure
Pressure
29
Osmoreceptors measure
Water
30
Neurons communicate with 3
Other Neurons Muscles Glands
31
3 functions CNS
Sensing Moving Processing
32
High BP sympathetic/ parasympathetic
Sympathetic
33
3 factors affect BP
Heart rate Blood volume Vasoconstriction
34
Two locations in body for stored glucose (glycogen)
Liver and muscles
35
short distance communication in sensory nerves called
graded potential
36
touch excites a _ in the sensory nerve in your fingers
graded potential
37
which nervous system can regenerate
only the peripheral nervous system - not the CNA
38
ability for NS to change - sprouting new dendrites, changes in synaptic contacts known as
plasticity