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Flashcards in Overview Deck (39):
0

Two parts nervous system

CNS - brain, spinal cord
PNS - peripheral nerves

1

Define nervous system

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

2

Sensory function carried out by which neuroma

Afferent
(Sensory) neutrons

3

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

Interneurons

4

Motor response
Impulse carried out by

Motor
Efferent
Neurons

5

3 PNS sensory receptors internal environment

Chemoreceptors
Baroreceptors
Osmoreceptors

Autonomic

6

Role of brain in CNS

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

7

Role spinal cord CNS

Conducts signals to/from brain
Controls reflex activities

8

Role of motor neurons PNS

CNS to muscles and glands

9

Role of sensory NEURONS CNS

Sensory organs to CNS

10

Motor neurons 2 categories

Somatic NS
Autonomic NS

11

Autonomic NS two types

Sympathetic
Parasympathetic

12

Role somatic NS

Controls voluntary movements

13

Role autonomic NS

Controls involuntary responses

14

Which tissues does ANS affect

Organs
Glands
Cardiac & smooth muscles

15

Sympathetic innervates

Thoraco-lumbar innervation

16

Parasympathetic innervates

Cranio-sacral innervation

17

5 examples of what ANS controls

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

18

Enteric NS brain of

GIT

19

How enteric NS relate to autonomic NS

Functions autonomously
Regulated by ANS

interacts extensively with CNS

20

Enteric links with CNS sympathetic via

Pre-vertebral ganglia

21

Enteric links with CNS parasympathetic via

Vagus

22

Role of sensory neurons in enteric NS

Monitor chemical changes via chemoreceptors
Monitors stretching via stretch receptors

Of GI Tract

23

Motor neurons role in enteric NS

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