4718802
Descripción
Mapa Mental por Jack Willepotte, actualizado hace más de 1 año
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Creado por Jack Willepotte
hace casi 9 años
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The nervous system
- sense organs
detect stimuli
- eyes, ears, tongue, nose
and skin are sense organs
- all of these contain different
receptors, these receptors are
a group of cells that are
sensitive to a certain stimulus
- they chang the stimulus energy(E.G
light energy) into electrical impulses
- examples of stimulus: light,
sound, pressure, touch, pain
or temperature
- light receptor
cells are like
most animal
cells
- light receptor
cells are like
most animal
cells
- examples of stimulus: light,
sound, pressure, touch, pain
or temperature
- they chang the stimulus energy(E.G
light energy) into electrical impulses
- all of these contain different
receptors, these receptors are
a group of cells that are
sensitive to a certain stimulus
- eyes, ears, tongue, nose
and skin are sense organs
- Central Nervous system
coordinates a response to
detected stimulus
- CNS is sent all information
from sense organs
- from which reflexes and
actions are coordinated
- CNS is the brain and
spinal cord ONLY
- instructions from the CNS are sent to the
effectors which respond accordingly
- This can be a reflex for
example, reflexes help
prevent injury as its an
automatic response
- Passage of information in a reflex is called a reflex arc.
- Passage of information in a reflex is called a reflex arc.
- This can be a reflex for
example, reflexes help
prevent injury as its an
automatic response
- instructions from the CNS are sent to the
effectors which respond accordingly
- CNS is the brain and
spinal cord ONLY
- neurones(nerve
cells) transmit
information quickly
as electrical
impulses to and
from the CNS
- The impulses
movement
- receptors in sense
organs: detect stimuli
- sensory neurones: nerve cells
that carry signals as electrical
impulses from receptor in sense
organs to CNS
- synapse
- relay neurone: nerve cells that
carry signals from sensory
neurones to motor neurones
- synapse
- Motor neurones: nerve cells that carry
signals from the CNS to the effector
muscles or glands
- glands respond by
secreting(releasing)
chemical substances
- glands respond by
secreting(releasing)
chemical substances
- Motor neurones: nerve cells that carry
signals from the CNS to the effector
muscles or glands
- synapse
- synapses connect
neurones. the nerve
signal arrives as
electrical impulses
then the signal is
transferred by
chemicals which
diffuse across the
gap, these chemicals
then set off a new
electrical charge in
the next neurone
- relay neurone: nerve cells that
carry signals from sensory
neurones to motor neurones
- synapse
- sensory neurones: nerve cells
that carry signals as electrical
impulses from receptor in sense
organs to CNS
- receptors in sense
organs: detect stimuli
- The impulses
movement
- from which reflexes and
actions are coordinated
- CNS is sent all information
from sense organs
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