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Transcript
Name: ___________________________________________________________ Hr: ______________ Unit 2: Nervous System Week 1 Notes Topic: ___________________________________________ Date: ____________________________ (1) Function: - Basic Pathway: (2) Structure: - Made Of: - Has a complex organization (hierarchy) of sensory and motor levels. (3) Brain & Spine: *Example: Paralysis (4) Neuron: - Neuron = - Types: - Basic Structural Components: (5) Unipolar Neurons: - Use: - Focus: (No need to have the cell body right by dendrites…) (6) Multipolar Neurons: - Use: - Focus: (Important to have cell body right next to dendrites) (7) Junctions: - Junction = - Nerve Impulse Axon Axon Terminal Release Neurotransmitter (8) Nervous System Organization: (9) Sensory Input: - (10)Central Nervous System (CNS): - Includes: - (11)Peripheral Nervous System (PNS): - “Middle Man” / Body Guard (between Body + CNS) - 2 Divisions: (12)Motor / Efferent Output: - CNS Effector Organ - 2 Divisions: (13)Somatic Nervous System: - (14)Autonomic Nervous System: - Involuntary Actions: - 2 Subdivisions: (15)Parasympathetic Pathway: - Normal Bodily Functions: (16)Sympathetic Pathway: - Bodily functions during heightened excitement… Topic: _______________________________________________ (1) Nerve Impulses: - Nerve Impulse = (2) Neuron Membranes & Ions: - Neurons have Na+ and K+ pumps w/in their membranes… - (3) Neuron Resting Potential: - K+ channel a little “loose”: - Neuron Inside = - Neuron Outside = - Neuron Membrane = (4) Ion & Charge Imbalance: - K+ ions leak out: - Nature likes balance! Imbalance does not last naturally! Date: ______________________ (5) Depolarization & Repolarization: - Depolarization: - Repolarization: (6) Action Potential: - Action Potential = - Process: (7) Regaining Resting Potential: - - Imbalance = Not Normal! - Na+ and K+ Pumps active transport (using ATP) Na+ and K+ back out/in of the axon… (8) Myelin & Action Potential: - Myelin = - Creates “gaps” between Na+ and K+ pumps in membrane… (9) Videos: - Go to YouTube Type In “Neurotransmitter Synapse 3D Animation” - Go to Google Type In “Action potential propagation animation” Topic: ____________________________________________________ Date: ______________________ (1) Reflex Arc: - Reflex = - Types of Reflexes: (2) Reflex Arc Pathway: 1. 2. 3. 4. 5. (3) Autonomic Reflexes: - Involuntary Movement of: - Examples: (4) Somatic Reflexes: - - Examples: (5) Brain Hemispheres: - Hemispheres = - Right Hemisphere controls - Left Hemisphere controls (6) Brain Lobes: - Lobes = - Perependicular to hemisphere line = (7) Frontal Lobe: (8) Parietal Lobe: - (9) Temporal Lobe: - Includes: (10)Stuff In Your Temporal: - Thalamus, Hypothalamus, Pituitary, Limbic - Limbic = (11)Occipital Lobe: - (12)Cerebellum: - DOES NOT MAKE MUSCLES MOVE INITIALLY! (13)Brain Stem: - Includes: (14)Stuff In Brain Stem: - Maintains Homeostasis:
