Tanycytes

From Wikipedia, the free encyclopedia

Tanycytes are special ependymal cells located in the floor of the third ventricle having processes extending deep into the hypothalamus. It is possible that their function is to transfer chemical signals from CSF to CNS.

Recent text suggests that tanycytes are involved in transferring selected molecules from blood to CSF.

[edit] External links

• http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Nervous/Nervous.htm

v • d • e Histology: nervous tissue Neurons (gray matter) soma - axon (axon hillock, axoplasm, axolemma, neurofibril/neurofilament) dendrite (Nissl body, dendritic spine, apical dendrite, basal dendrite) types: bipolar - pseudounipolar - multipolar - pyramidal - 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 (α motorneuron, γ motorneuron) Synapses neuropil - synaptic vesicle - neuromuscular junction - electrical synapse - Interneuron (Renshaw) Sensory receptors Meissner's corpuscle - Merkel nerve ending - Pacinian corpuscle - Ruffini ending - Muscle spindle Free nerve ending Olfactory receptor neuron - Photoreceptor cell - Hair cell - Taste bud Glial cells Astrocyte (Radial glia) - Oligodendrocyte - Ependymal cells (Tanycytes) - Microglia Myelination (white matter) CNS: Oligodendrocyte PNS: Schwann cell - Neurolemma - Nodes of Ranvier/Internode - Schmidt-Lanterman incisures Related connective tissues epineurium - perineurium - endoneurium - nerve fascicle - meninges