Cutaneous sense organs

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Template:Name = Cutaneous sense organs

An cutneous sense organs is a simpler type of sensory receptors seen in skin.

[edit] Functional Classifcation of Neurons

sensory or afferent neurons- carry impulses from sensory to the CNS. specialized senses receptors such as cutaneous receptors ( meisners and pacinan corpascles), propriocepotrs and pain receptors (afferent neuron).

[edit] External links

• Interneurons at eMedicine Dictionary

v • d • e Anatomy of torso (primarily): the spinal cord Spinal nerve Dorsal (Root, Ganglion, Ramus) • Ventral (Root, Ramus) • Sympathetic trunk • rami communicantes (Gray, White) Gray matter/Rexed laminae Posterior horn (Posteromarginal nucleus, Column of Clarke, Substantia gelatinosa of Rolando, Nucleus proprius) Lateral horn/Anterior horn (Intermediolateral nucleus) Central canal/Substantia gelatinosa centralis - Gray commissure White matter somatic/ascending (blue) Posterior/PCML: touch: Gracilis • Cuneatus Lateral: proprioception: Spinocerebellar (Dorsal, Ventral) • pain/temp: Spinothalamic (Lateral, Anterior) • Posterolateral (Lissauer) • Spinotectal motor/descending (red) Lateral: Corticospinal (Lateral) • Ep (Rubrospinal, Olivospinal) Anterior: Corticospinal (Anterior) • Ep (Vestibulospinal, Reticulospinal, Tectospinal) Layers Epidural space • Dura mater • Subdural space • Arachnoid mater • Subarachnoid space • Pia mater Other structures Denticulate ligaments • Conus medullaris • Cauda equina • Filum terminale • Cervical enlargement • Lumbar enlargement Anterior median fissure • Posterior median sulcus Anterior white commissure

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

[edit] Reference

Template:Essentials of Human Anatomy & Physiology