neurons

Question 1

sensory neuron

Answer 1

carrys messages from the PNS to the CNS. long dendrtites and short axons

Question 2

neuron

Answer 2

basic building block of the NS. nerve cells that process and transmit messages

Question 3

motor neuron

Answer 3

connect the CNS to effectors such as muscles and glands. short dendrtites and long axons

Question 4

relay neuron

Answer 4

connect the sensory neurons to motor neurons or other relay neurons. short dendrites and short axons

Question 5

structure

Answer 5

from less than a millimetre to up to a metre long

Question 6

electrical transmission

Answer 6

when in resting state, the inside of the cell is negatively charged compared to the outside. when it is activated by a stimulus is is positively charged

Question 7

synaptic transmission

Answer 7

the process by which neighbouring neurons communicating with each other by sending chemical messages across the gap

Question 8

neurotransmitter

Answer 8

chemical messages in the body that carry chemical signals from one neuron to the next target cell. they have specialist functions

Question 9

exitation

Answer 9

excitatory signalling from one cell to the next makes the latter cell more likely to fire

Question 10

inhibition

Answer 10

inhabitory signalling makes the latter cell less likely to fire