Ogunkua Flashcards
propioception
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_____ are nerve cells and _____ are the supporting cells
neurons; neuroglia(glia)
6 categories of nerve cells
1- unipolar mesencephalic nucleus of Cr.V 2- retinal bipolar cell 3- retinal ganglion cell 4- retinal amarcrine cell 5- cortical pyramidal cell 6- cerebellar purkinje cell
3 categories of neuroglia (MOA)
1- astrocyte
2- oligodendrocyte
3- microglia
cytoskeletal elements in neurons
1- tubulin
2- tau
3- actin
4- astroglia
tubulin
- cell body, axon, dendrites
tau
- microtubule binding protein
- only present in axon
actin
- growing of tip of axon and dendrite
astroglia/astrocytes
- star shaped
- located in the cortex?
neuropil
synaptic connections that define neural circuits are made in a dense tangle of dendrites, axon terminals and glial cells which together constitute the neuropil
- is a broad term defined as any area in the nervous system composed of mostly unmyelinated axons, dendrites and glial cell processes that forms a synaptically dense region containing a relatively low number of cell bodies.
nerve ending
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what are the 2 morphological classifications of nerve endings?
simple and compound
what is the structure of simple nerve endings?
…
free nerve endings
- sensory receptors or specialized cell which convert (transduce) stimuli from the external or internal environments into afferent nerve impulses
- temp, touch and pain
- found along dermal epidermal layer
what are the 3 functional classifications of sensory receptors?
1- exteroreceptors
2- prioprioceptors
3- interoceptors