The Nervous System Flashcards
What should all control systems include?
Receptors, coordination centre and effectors
What do receptors do?
Detect stimuli(touch)
What does the ‘coordination centre’ do?
Receives and processes information from receptors around the body
Give an example of the coordination centre
Brain, spinal cord or pancrease
What do effectors do?
Bring about responses which restores optimum levels( body temp, blood sugar levels)
Give an example of effectors
Muscles and glands ( they include muscle contradictions or hormone release)
What are nerve cells called?
‘Neurones’
What are neurones function?
To carry electrical impulses from one place to another
What are a bundle of neurones called?
A nerve
What are the 3 types of neurone?
Sensory
Motor
Relay
Name some features of the nerve cells
Axon( long fibre), myeline sheath
Dendrons
What’s the function of the axon?
Long so they can carry messages up and down the body
What’s the function of the myeline sheath?
Insulates the axon
What’s the functions of dendrons?
Branch further as dendrites at each end- receive incoming impulses from other neurones
What’s a synapse?
The gap between 2 neurones when they meet