Nervoussyspowerpoint

Nervoussyspowerpoint - Section 3 of Course Nervous System...

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Unformatted text preview: Section 3 of Course Nervous System Skeletal System & Joints Muscle Reproduction, Development, Childbirth, Contraception The Nervous System Chapter 7 Chapter 8 Chapter 9 Chapter 10 Nervous System Overview Central nervous system Nuclei Tracts Peripheral nervous system Cranial nerves 12 pair Spinal nerves 31 pair Definitions Nerve Ganglia Sensory neurons Motor neurons Effector organs Somatic motor innervate skeletal muscles Autonomic motor involuntary effector organs- smooth muscle, cardiac muscle, glands Sympathetic branch Parasympathetic branch Neuroglia: supporting cells and their functions Brain tumors Types Peripheral system Schwann cells - Guillain-Barre syndrome Satelite cells = ganglionic gliocytes CNS Oligodendrocytes - Multiple Sclerosis Astrocytes Microglia Ependyma Schwann Cells CNS Glial Cells Autonomic Nervous System Provides autonomic control of involuntary effectors Two neurons between the CNS and effector Preganglionic neuron acetylcholine Postganglionic Sympathetic norepinephrine , + Parasympathetic acetylcholine Divisions of the Autonomic nervous system Sympathetic (Thoracolumbar) Division: T 1 L 2 Overview of the Autonomic Nervous System Sympathetic Chain of Paravertebral Ganglia Mass Activation and Splanchnic Nerves Abdominal Ganglia Autonomic Nervous System Divisions of the autonomic nervous system Parasympathetic (craniosacral) Division Adrenergic and cholinergic synaptic transmission Other autonomic neurotransmittors Organs with dual innervation Neurotransmitters in the Autonomic Nervous System Norepinephrine and Epinephrine Smooth Muscle and synapses en passant The Action Potential General properties neurons, muscle cells, glands Role of sodium and potassium membrane diffusion potentials in the generation of the action potential Causes of the elongated plateau of cardiac muscle fibers during the depolarization repolarization cycle The Action Potential States of Ion Channels Components of an Action Potential Temporal variation in Diffusion Potentials Determine the Components of an Action Potential Refractory Periods are Elongated in Cardiac Muscle Fibers Heart contracts as syncytium & thus can sustain force Its AP lasts about 250 msec Has a refractory period almost as long as AP Cannot be stimulated to contract again until has relaxed Fig 13.21 13-59 Components of the Total Refractory Period...
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Nervoussyspowerpoint - Section 3 of Course Nervous System...

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