Histology: muscle & nervous Flashcards
what are muscle cells paced with
specialised contractile fibres in the cytoskeleton
describe features of smooth muscle (3)
no striations, involuntary, vascular
describe features of skeletal muscle (3)
striated, voluntary, multinucleated long fibres
describe features of cardiac muscle (3)
striated, single nucleus, intercalated discs
what do intercalated discs contain
gap junctions and desmosomes(macula adherens)
what are the different neuron types
unipolar, multipolar, bipolar and pseudounipolar
briefly describe a multipolar neuron
many dendrites, one axon
briefly describe a pseuodunipolar neuron
short process gives rise to axon in both directions
briefly describe a bipolar neuron
one dendrite and one axon
what are glia
glial cells = neuronal support cells
what are nerves made up of
neurons + glia surrounded by either meninges or epineurium depending if CNS or PNS
where is the central nervous system(CNS) and peripheral nervous system(PNS)
CNS = brain + spinal cord PNS = everything else
where in the CNS are oligodendrocytes found and what name is given to them in the PNS
in CNS = myelin and axon repair
in PNS = Schwann cells
