Control And Comminucation
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Nervous system
Made of the cns and nerves Consists of the spinal cord and brain
Cerebrum
controls conscious thought and actions, memories and personality
Cerebellum
controls balance and movement
Synapse
Neurons are connected by tiny gaps called Synapses. Chemicals diffuse across the gap to carry the impulse from one neuron to another.
Medulla
controls heart rate and breathing rate
reflex arc
Rapid and protects the body from harm.
How are messages sent around the body
By using nerves or hormone
What does sensory sensory neuron do
Pass sensory information to the central nervous system (CNS)
What do inter neurons do
processes information from the sense that require a response Works in the cns
What do motor neurons do
Enables a response to occur at an effector (muscle or gland)
Stage 1 of reflex
Stimulus sensed by a sense organ and detected by a receptor
Stage 2 of reflex
Electrical impulse carried by the sensory neuron to the spinal cord where the inter neurons are
Stage 3 of reflex
The electrical impulse is then carried by a motor neuron to an effector
Stage 4 of reflex
The effector then responds for example muscle contraction removing limb from harm