Nervous-System Physiology: Study Map
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Basic organization
- CNS and PNS
- Somatic and autonomic divisions
- Neurons, glial cells, nerve fibers, and myelin
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Excitable tissue physiology
- Resting membrane potential
- Ion channels and sodium-potassium pump
- Action potentials, refractory periods, and nerve conduction
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Synapses and neurotransmitters
- Chemical versus electrical synapses
- EPSP, IPSP, summation, and synaptic inhibition
- Acetylcholine, glutamate, GABA, dopamine, serotonin, norepinephrine
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Neuromuscular junction and skeletal-muscle control
- Neuromuscular transmission
- Excitation-contraction coupling
- Muscle spindle and Golgi tendon organ
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Reflexes and spinal cord
- Reflex arc
- Stretch, tendon, withdrawal, and crossed-extensor reflexes
- Spinal shock and muscle tone
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Sensory physiology
- Receptors and sensory transduction
- Touch, vibration, proprioception, pain, and temperature
- Ascending sensory pathways
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Motor-system physiology
- Motor cortex and corticospinal tract
- Upper versus lower motor neuron function
- Posture and voluntary movement
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Cerebellum and basal ganglia
- Coordination, motor learning, and equilibrium
- Initiation and modulation of movement
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Autonomic nervous system
- Sympathetic, parasympathetic, and enteric divisions
- Autonomic receptors and organ effects
- Autonomic reflexes
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Hypothalamus, limbic system, and higher brain functions
- Temperature, hunger, thirst, stress, and endocrine integration
- Emotion, memory, language, learning, and behavior
- Sleep, consciousness, and EEG
- Reticular activating system
- NREM and REM sleep
- Basic EEG rhythms
- Special senses
- Vision
- Hearing and balance
- Taste and smell
High-level overview
Nervous-system physiology explains how the body detects internal and external changes, processes information, and produces voluntary, involuntary, endocrine, and behavioral responses. Neurons transmit signals electrically through action potentials and chemically at synapses.
A useful learning sequence is: first master membrane potential, action potentials, synapses, and neurotransmitters. Then study sensory input, reflexes, motor control, and autonomic regulation. Finally, integrate these with cerebellar, basal-ganglia, hypothalamic, cortical, sleep, and special-sense functions.
Highest-yield foundation topics: action potential, synaptic transmission, sensory pathways, reflexes, corticospinal tract, neuromuscular junction, and autonomic nervous system.