Nervous System
what does PNS stand for?
peripheral nervous system
what does CNS stand for?
Central Nervous System
name the two parts of the CNS?
brain and spinal cord
What part of a neuron is made up of a fatty substance that insulates the electical impulses?
Myelin Sheath
what are the three types of neurons?
Sensory neurons, Motor neurons, and Interneurons
what is the master gland in the brain?
pituitary
what is the largest part of the brain?
cerebrum
what does the cerebellum do in the brain?
controls co-ordination and balance
what controls breathing/ heartbeat in the brain?
medulla oblongata
Special chemicals that transmit info from one neuron to another is called what?
neurotransmitters
what passes electrical impulses from one neuron to another?
neurotransmitters
what 2 things protect the brain?
meninges and skull
what is in the grey matter of the brain?
cell bodies
what is in the white matter of the brain?
dendrites and axons
what does the fluid do in the brain?
protection/ shock absorber
what is the gap between 2 neurons called?
synaptic cleft
where are the neurotransmitters made?
cell body
what is a nerve cell?
neuron
what carries impulses towards the cell body?
dendrites
what is the region where two neurons come in close contact called?
synapse
what is any change in the environment?
stimulus
what is an electrical message carried along a neuron called?
impulse
what detects a stimulus?
receptors
what carries impulses away from the cell body?
axons
what makes the myelin sheath?
schwann cells