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747892
B6: Brain and Mind
Description
GCSE Biology (B4 - The Processes of Life) Mind Map on B6: Brain and Mind, created by Matthew Law on 11/04/2014.
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biology
b4 - the processes of life
gcse
Mind Map by
Matthew Law
, updated more than 1 year ago
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Matthew Law
over 10 years ago
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Resource summary
B6: Brain and Mind
Responding to Environmental Changes
Responding to a Stimulus
STIMULUS: a change in the environment of an organism
animals respond to stimuli in order to keep themselves in favourable conditions, eg...
moving to somewhere warmer if they're too cold
moving towards food if they're hungry
moving away from danger to protect themselves
not responding to a stimulus is a super effective way to die - at the end of the day stimuli are there to keep organisms alive
Receptors
RECEPTOR: an organ or cell able to detect an external stimulus and transmit a signal to a sensory nerve, par exemple...
light receptor cells in the retina of the eye
sound receptors in the ear
position receptors in the inner ear
chemical receptors in the nose and tongue
touch, pressure, temperature and pain receptors in skin
receptors respond to a stimulus and send an impulse along SENSORY NEURONS to the CENTRAL NERVOUS SYSTEM
Simple Reflexes
simple reflexes produce rapid INVOLUNTARY RESPONSES to a stimulus
this gives an animal the highest chance of survival
यथा...
moving towards and finding food
moving away and sheltering from predators
moving towards and finding a mate
pupil dilation
babies sucking nipples when said nipples are placed inside said babies' mouths
knee jerk reflex
mostly used by 'simple' animals (eg. amoeba blublublub)
Effectors
EFFECTOR: an organ or cell that acts in response to a stimulus
either glands or muscles (in multicellular organisms)
carry out the body's response to stimuli
The Nervous System
Conditioned Reflex Responses
Complex Behaviour
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