NERVOUS TISSUE Flashcards
Function of neurone
quickly conducts messages
What is a unipolar neurone
single projection only
What is a bipolar neurone
found in retina, ear or nose
projection from top and bottom
What is a multipolar neurone
most common
only one direction
multiple projections
Function of sensory neurone
relays message to CNS Afferent
Functions of motor neurone
carrying info away from the CNS to a muscle or gland
Efferent
Functions of internuncial neurone
Communicates between sensory and motor in spine
Function of Mixed nerves
carry both sensory and neurone innervation sending signals
What do Schwann cells do
from the myelin sheath around the axons of neurones
-insulate and protect nerves
What are the gaps between Schwann cels
nodes of ranvier
help speed the impulse along the nerve fibre
What is a neurone-effector junction?
when the junction at the end of a motor neurone is to a bone or gland
can be started or smooth
What transmitter substance does a straited muscle and smooth muscle require
Straited muscle -
noradrenalin
Smooth muscle -
acetylcholine
