Unit 2 nervous control Flashcards
Response to stimulus
Rapid action form muscle
Slower response from gland
Nervous system
Consists on central nvrouse system and other nerves
CNS
Brain
Spinal chord
Sorts out stimuli received from sense organs and sens electrical impulses along. Nerves to effectors
Parts of the brain
Cerebrum
Cerebellum
Medulla
Cerebellum
Controls balance ade coordinated movement
Cerebrum
Responsible for conscious thoughts, reasonaning, memory and emotions
Medulla
Controls heart rate, brathing rate and peristalsis
Electrical impulses carry
Meaasages along to Neurons
Chemicals transfer
Messages between neuron at synapses
Types of neurons
Sensory
Inter
Motor
Receptors
Detect sensory stimuli
Sensory Neurons
Pass information to CNS
inter neuron
Operate within CNS, which processes information from the senses that requir response
Motor neuron
Enables a response to occur at an effector
Equation for neurons
Receptor( IN SENSE ORGANS) - sensory neuron - inter neuron - motor neuron - effecter (muscle to gland)
Reflex arc
All the neurons connected together by sensory and axon fibres
Reflex
Protects body from harm.
Synapes
Tiny space between axon and sensory fibre
Reflex action
Tramission of nerve impulses through a reflex arc
What is the nervous system made of
Neurons
Relay neurons
Pass electrical impulses to motor neurons
What happens to electrical signals when reaching synpase
Trasmitter molecules are released into gap at synapse, effectors of the next neuron are effected, electrical impulses move on