Unit 3-study guide.doc.docx - Biology 1409 Study Guide 3...

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Biology 1409 Study Guide 3 Shanks Chapter 25 & 26: Nervous System and Senses Neuron Anatomy: Cell body, dendrites and axons & information flow through a neuron Axons: myelinated - Schwann cells, Nodes of Ranvier, nodal jumping, multiple sclerosis. Neuron to Neuron Synapse: Pre and post synaptic neurons Synaptic gap and neurotransmitters (release & receptors)
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Central Nervous System - Meninges, bone, & cerebrospinal fluid Spinal cord - spinal nerves & spinal cord injury Brain – Cranial nerves Cerebrum – right & left hemispheres, lobes, crossover, and the motor & sensory cortex Cerebellum – “little cerebrum”; coordinated movement & balance Peripheral Nervous System Nerves – spinal vs. cranial Reflexes - Somatic vs, autonomic reflex Cutaneous Receptors – in skin
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Special Receptors: o Taste – chemoreceptors & locations o Smell – chemoreceptors, olfactory receptors, location o Hearing – mechanoreceptors, inner ear, eardrum, ossicles & cochlea o Equilibrium – mechanoreceptors, inner ear, cochlea, & semicircular canals o Vision – photoreceptors, retina, sclera, cornea, iris, pupil, lens, optic nerve, & rods and cones.
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