Nervous System Course

Lesson 1 • Brain Regions and Functional Mapping

Maps the cerebrum, cerebellum, brainstem, and diencephalon to their primary functions. Establishes regional anatomy needed for clinical and applied chapters.

Lesson 2 • Overview of Nervous System Divisions

Introduces the central and peripheral nervous system divisions and their functional boundaries. Provides the organizational framework used throughout the course.

Lesson 3 • Spinal Cord Organization

Details gray and white matter arrangement, spinal segments, and tract locations within the cord. Prepares students for understanding sensory and motor pathway chapters.

Lesson 4 • Neurons: Structure and Classification

Covers neuron morphology, axon and dendrite organization, and classification by function and shape. Builds cellular vocabulary essential for later physiology chapters.

Lesson 1 • Summation and Neural Integration

Covers temporal and spatial summation and how neurons integrate competing inputs to reach threshold. Connects integration principles to reflex arcs and higher processing.

Lesson 2 • Synaptic Transmission Mechanisms

Details chemical synapse structure, neurotransmitter release, and receptor binding at the postsynaptic membrane. Establishes the basis for pharmacological and pathological discussions.

Lesson 3 • Major Neurotransmitter Systems

Surveys glutamate, GABA, dopamine, serotonin, acetylcholine, and norepinephrine pathways and functions. Provides the neurochemical context for pharmacology and disease chapters.

Lesson 4 • Membrane Potential and Ion Gradients

Explains resting membrane potential using ion concentration gradients and selective permeability. Grounds students in the biophysical principles underlying all neural signaling.

Lesson 1 • Auditory and Vestibular Pathways

Describes cochlear hair cell transduction, ascending auditory brainstem pathways, and vestibular nuclei projections. Links pathway anatomy to balance and spatial orientation.

Lesson 2 • Somatosensory Pathways to the Cortex

Traces the dorsal column-medial lemniscal and spinothalamic tracts from receptor to somatosensory cortex. Distinguishes the modalities carried by each tract.

Lesson 3 • Sensory Receptor Types and Transduction

Classifies mechanoreceptors, thermoreceptors, nociceptors, and proprioceptors by stimulus type and adaptation rate. Establishes receptor physiology as the entry point for all sensory pathways.

Lesson 4 • Visual System Anatomy and Processing

Covers retinal cell layers, optic nerve routing, lateral geniculate nucleus relay, and primary visual cortex organization. Connects pathway anatomy to visual field deficits.

Lesson 1 • Spinal Reflexes and Motor Units

Defines the motor unit, stretch reflex arc, and Golgi tendon organ reflex as the foundation of spinal motor control. Establishes lower motor neuron concepts used in clinical assessment.

Lesson 2 • Basal Ganglia Circuitry and Function

Explains the direct and indirect pathways of the basal ganglia and their role in movement selection and suppression. Links circuit dysfunction to hypokinetic and hyperkinetic disorders.

Lesson 3 • Descending Motor Pathways

Traces the corticospinal, rubrospinal, reticulospinal, and vestibulospinal tracts from origin to spinal targets. Distinguishes lateral vs. medial pathway functions in voluntary and postural control.

Lesson 4 • Cerebellar Contributions to Motor Control

Details cerebellar cortex circuitry, deep nuclei output, and the three functional zones of the cerebellum. Explains error correction and motor learning roles.

Lesson 1 • Sympathetic Division Physiology

Details thoracolumbar outflow, adrenergic receptor subtypes, and fight-or-flight effector responses. Connects receptor pharmacology to clinical drug targets.

Lesson 2 • Autonomic Nervous System Architecture

Contrasts the two-neuron preganglionic-postganglionic chain of the ANS with the somatic motor system. Maps ganglia locations for sympathetic and parasympathetic divisions.

Lesson 3 • Autonomic Control of Key Organ Systems

Applies dual innervation principles to the heart, lungs, GI tract, and urinary bladder. Predicts opposing sympathetic and parasympathetic effects on each organ.

Lesson 4 • Central Autonomic Regulation

Identifies the hypothalamus, nucleus tractus solitarius, and brainstem centers as autonomic command regions. Links central regulation to homeostatic reflexes and stress responses.

Lesson 1 • Attention and Executive Function Networks

Identifies the prefrontal cortex, anterior cingulate, and parietal cortex roles in attention, working memory, and cognitive control. Links network disruption to attention disorders.

Lesson 2 • Emotion, Reward, and the Limbic System

Traces amygdala, nucleus accumbens, and prefrontal circuits underlying emotion regulation and reward processing. Connects dopaminergic reward signaling to motivation and addiction.

Lesson 3 • Language Networks and Lateralization

Maps Broca's and Wernicke's areas, the arcuate fasciculus, and right hemisphere contributions to language. Predicts aphasia types from lesion location.

Lesson 4 • Memory Systems and Hippocampal Circuits

Distinguishes declarative from non-declarative memory and maps encoding, consolidation, and retrieval to hippocampal and cortical circuits. Connects circuit damage to amnesia types.

Lesson 1 • Traumatic Brain and Spinal Cord Injury

Analyzes primary and secondary injury mechanisms, diffuse axonal injury, and spinal shock following trauma. Connects injury level and completeness to functional outcome prediction.

Lesson 2 • Epilepsy and Seizure Mechanisms

Explains abnormal synchronous neuronal discharge, seizure classification, and the role of ion channel mutations. Connects seizure type to EEG patterns and circuit involvement.

Lesson 3 • Stroke: Ischemia and Hemorrhage

Contrasts ischemic and hemorrhagic stroke mechanisms, penumbra physiology, and time-dependent tissue damage. Maps vascular territory to expected neurological deficits.

Lesson 4 • Demyelinating and Inflammatory Disorders

Covers myelin loss mechanisms in multiple sclerosis and Guillain-Barré syndrome and their conduction consequences. Distinguishes central from peripheral demyelination patterns.

Lesson 1 • Analgesia and Pain Pharmacology

Examines opioid receptor mechanisms, NSAIDs, and adjuvant analgesics in the context of pain pathway modulation. Addresses tolerance, dependence, and multimodal pain management.

Lesson 2 • Antiepileptic Drug Mechanisms

Classifies antiepileptic drugs by sodium channel blockade, GABA enhancement, and calcium channel modulation. Matches drug mechanism to seizure type for rational selection.

Lesson 3 • Neuroprotection and Emerging Therapies

Reviews neuroprotective strategies, gene therapy approaches, and neuromodulation techniques such as deep brain stimulation. Evaluates evidence quality and translational challenges.

Lesson 4 • Principles of CNS Drug Action

Covers blood-brain barrier penetration, receptor selectivity, and dose-response relationships as pharmacological fundamentals. Establishes the framework for evaluating all CNS drug classes.