Example of nervous tissue.
Nervous tissue is the fourth major class of
vertebrate
tissue. The function of the nervous tissue is in
communication between parts of the
body.
It is composed of
neurons, which transmit impulses, and the
neuroglia, which assist propagation of the
nerve
impulse as well as provide
nutrients to the neuron.
All nervous tissue of an organism makes up its
nervous system.
it also sends message to the brain in able to do something
External links
|
Histology: nervous tissue |
|
Neurons (gray
matter) |
soma,
axon (axon
hillock,
axoplasm,
axolemma,
neurofibril/neurofilament),
dendrite (Nissl
body,
dendritic spine)
types (bipolar,
pseudounipolar,
multipolar,
pyramidal/a>,
Purkinje,
granule) |
|
Afferent nerve/Sensory
nerve/Sensory
neuron |
GSA,
GVA,
SSA,
SVA, fibers
Ia,
Ib or Golgi,
II or Aβ,
III or Aδ or fast pain,
IV or C or slow pain |
|
Efferent nerve/Motor
nerve/Motor
neuron |
GSE,
GVE,
SVE,
Upper motor neuron,
Lower motor neuron (Aα
motorneuron,
Aγ motorneuron) |
|
Synapses |
neuropil,
synaptic vesicle,
neuromuscular junction,
electrical synapse -
Interneuron (Renshaw) |
|
Sensory receptors |
Free nerve ending,
Meissner's corpuscle,
Merkel nerve ending,
Muscle spindle,
Pacinian corpuscle,
Ruffini ending,
Olfactory receptor neuron,
Photoreceptor cell,
Hair cell,
Taste bud |
|
Glial cells |
astrocyte,
ependymal cells,
microglia,
radial glia |
|
Myelination (white
matter) |
Schwann cell,
oligodendrocyte,
nodes of Ranvier,
internode,
Schmidt-Lanterman incisures,
neurolemma |
| Related
connective tissues |
epineurium,
perineurium,
endoneurium,
nerve fascicle,
meninges |