Nervous Tissue Flashcards
What 2 major cells does nervous tissue consist of
Neuronal and Gilial (Supporting)
Neuronal cells transmit signals thru the nervous system. What form are these signals in
electric currents
What specalised areas do the nerve cells communicate with each other thru
Synapses
Transmission of info across a synapse happens thru the release of what
neurotransmitters
Name 6 types of neurotransmittera
acetylchlorine, biogenic amines, amino acid, ATP, Peptides and dissolved gases
Name the 3 main parts of a neuron cell
soma, dendrites and axon
What does the soma contain
nucleus ER (as darkly-stained Nissl bodies) mitochondria extensive cytoskeleton ribosomes
Purpose of dendrites
extensions of the cell that recieve info
purpose of axon/nerve fibre
transmits info away from cell body
Do gilial cells transmit info
no
purpose of gilial cells
supporting cells, support the survival and function of neuronal cells
3 types of supporting cells
oligodendrocyte, astrocytes, ependymal cells
insulating substance produced from oligo is called what
myelin
function of astrocytes
hold things together, maintain structure andt vascular supply
2 types of astrocytes
fibrous and protoplasmic
