Nervous System – Vocabulary, Part I
Endocrine system |
1 of 2 controls and communication system of the body. Slow/via blood |
CNS |
Brain & Spinal Cord |
PNS |
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Receptors |
PNS structures for collecting information |
Effectors |
Muscles or glands to react to changes in the body’s environment responding to information from CNS |
Afferent – |
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Efferent |
Motor, Sends impulses |
Somatic Sensory |
1 of 2 subdivisions in SNS – vol. touch pain, pressure vibration, proprioception |
Visceral Sensory |
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Proprioception |
Knowing where you are, position, posture, equilibrium |
Neuroglial cells |
Nonexcitable cells that support and protect the neurons |
Perikaryon or soma |
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Dendrites |
Un-myelinated receptive processes of neuron |
Axons |
Mostly myelinated, carry info away |
Synaptic knobs/terminal buttons |
Where neurotransmitters are stored – end of axons |
Myelin sheath |
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Multiple Sclerosis |
Disease that damages myelin sheaths |
Glia |
Neuroglial cell |
Endoneurium |
Areolar C T around fiber |
Perineurium |
DICT around fasiculi |
Epineurium |
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Nerves |
Fasciculi wrapped in CT in PNS, Mixed w/sensory & motor |
Tracts |
Fasciculi, NO CT in CNS, NOT MIXED. Types:association,commissural, projection |
Association Tract |
connect Gyri in hemisphere |
Commissural Tract |
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Projection |
Connect cerebrum to other parts of brain |
Ganglia |
Cluster of cell bodies in PNS |
Nuclei |
Cluster of cell bodies in CNS |
Nerve Impulse Transmission |
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Neurotransmitters |
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Synaptic vesicles |
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Primary Vesicles |
Prosencephalon(forebrain, Mesencephalon(midbrain) Rhombencephalon(hindbrain) |
Gray Matter |
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White Matter |
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Cranial Meninges |
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Dural Sinuses |
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Arachnoid mater |
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Pia mater |
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Dura mater |
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Choroid Plexuses |
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CSF |
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Brain Ventricles |
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