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PY10.1-20 | Introduction to Central Nervous System Physiology
Learning Objectives
- Describe the functional organisation of the CNS and PNS, including the autonomic nervous system (PY10.1, PY10.2)
- Classify neurotransmitters and explain chemical synaptic transmission, including receptor types and reflex arcs (PY10.3, PY10.4, PY10.5, PY10.6)
- Trace the ascending sensory pathways (dorsal column-medial lemniscus and anterolateral systems) and describe pain physiology with gate control theory (PY10.7, PY10.8)
- Describe the pyramidal and extrapyramidal motor pathways, differentiate UMN from LMN lesions, and explain spinal cord lesion syndromes including Brown-Sequard (PY10.9, PY10.10)
- Explain the functional anatomy, connections, and clinical disorders of the cerebellum, basal ganglia, and thalamus (PY10.11, PY10.12, PY10.13, PY10.14)
- Discuss the hypothalamus, limbic system, and cerebral cortex — their connections, functions, and clinical abnormalities (PY10.15, PY10.16)
- Describe the reticular activating system, sleep physiology, EEG waveforms, and the physiological basis of learning, memory, and speech (PY10.17, PY10.18)
- Demonstrate systematic neurological examination of higher functions, sensory and motor systems, reflexes, and cranial nerves (PY10.19, PY10.20)
INSTRUCTIONS
This guide covers the physiology of the central nervous system — one of the largest and most clinically tested topics in Physiology. It spans 20 NMC competencies (PY10.1–PY10.20) organised into three parts: sensory systems (Part 1), motor systems (Part 2), and higher brain functions (Part 3). Work through each part in sequence; every section builds on the previous one. Try the self-check questions before looking at answers. Estimated time: 60–75 minutes.
What you are studying in parallel: In Anatomy, you are learning the structural details of the spinal cord, brainstem, cerebellum, and cerebral hemispheres — the hardware. Here in Physiology, you learn what that hardware does. In Biochemistry, you are studying signal transduction and neurotransmitter metabolism. These three subjects converge: the structure (Anatomy), the function (Physiology), and the molecular machinery (Biochemistry) form an integrated understanding of the nervous system.
References
- Guyton and Hall Textbook of Medical Physiology, 14th ed., Chapters 46–60 (textbook)
- Ganong's Review of Medical Physiology, 26th ed., Sections V–VII (textbook)
- Sembulingam K, Sembulingam P. Essentials of Medical Physiology, 9th ed., Chapters 149–175 (textbook)
- Berne & Levy Physiology, 7th ed., Chapters 9–12 (textbook)
- OpenStax Anatomy and Physiology 2e, Chapters 12–14 (CC BY 4.0) (textbook (CC BY 4.0))
Version 2.0 | Claude (AI-generated), NMC CBUC 2024, Adapted from Guyton & Hall 14e, Ganong's 26e, Sembulingam 9e