Brain Teaser 1, 4, 7, 10, 13, 16, 19, Which number comes next in the sequence? 21,22,23 or 24 ? Why can we these activities ? NERVOUS SYSTEM PRESENTED BY GROUP 8, YGH – K38 CAN THO UNIVERSITY OF MEDICINE – PHARMACY INTRODUCTION What is nervous system? Introduction Control Learning Memory Movement Feeling Division of nervous system ervous system nervous system Peripheralcord Central Nervous System (CNS) Autonomic Cranial nerves Spinal Nervous Brain nerves System (PNS) NEURON Has main parts Dendrites Axon Cell body Dendrites Receive messages and conduct impulses to the cell body Axon of another neuron Cell body or soma • Contain the cell nucleus Cell’s life support center Cell nucleus Vestibulocochlear nerve (VIII) Hearing and balance Vestibulocochlear nerve (VIII) Glossopharyngeal nerve (IX) • Tongue and throat sensations • Throat movement Glossopharyngeal nerve (IX) Vagus nerve (X) • Peristalsis • Blood pressure • Heart rate • Coughing • Sneezing Vagus nerve Accessory nerve (XI) Head and shoulder movement Accessory nerve(XI) Hypoglossal nerve(XII) • Speech • Swallowing Structure of a spinal nerve Sensory nerve in skin Posterior root Anterior root Motor nerve fiber Function of spinal nerves Cervical Nerves C1-C8 Thoracic Nerves T1-T12 Lumbar Nerves L1-L5 Sacral Nerves S1-S5 Heart rate, breathing Head,neck, Temperature arm regulation, trunk movements stability Hip and foot motion Knee extension Sexual flexion and function, bowel and bladder activity Heart rate and breathing Temperature regulation Knee motion Autonomic nervous system Autonomic nervous system Control involuntary responses Sympathetic division Parasympathetic division “Fight or flight” situations “Rest and digest” activities Autonomic Nervous System Response FIGHT or FLIGHT STRESS Autonomic Nervous System Response Peace REST and DIGEST Sympathetic Dilates pupils Inhibits salivation Increases Dilates respiration Increases heartof bronchioles Increases secretion rate sweat glands Parasympathetic Constricts pupils Stimulates salivation Decreases Constricts respiration bronchioles Decreases heart rate Secretion of adrenal hormones Inhitbits digestion Relaxes bladder Stimulates digestion Contracts bladder Passage for translation A stimulus begins an impulse in the branching fibers of the neuron, which are called dendrites A change in the electrical charge of the dendrite membranes is thus begun, and the nervous impulse moves along the dendrites like the movement of falling dominoes The impulse, traveling in only one direction, next reaches the cell body, which contains the cell nucleus Extending from the cell body is the axon, which carries the impulse away from the cell body Axons can be covered with a fatty tissue called myelin ... STRUCTURE OF PERIPHERAL NERVOUS SYSTEM PERIPHERAL NERVOUS SYSTEM Cranial Nerves Spinal Nerves Sympathetic Nervous System Autonomic Nervous System Parasympathetic Nervous System CRANIAL NERVES There... Movement Feeling Division of nervous system ervous system nervous system Peripheralcord Central Nervous System (CNS) Autonomic Cranial nerves Spinal Nervous Brain nerves System (PNS) NEURON Has main...Why can we these activities ? NERVOUS SYSTEM PRESENTED BY GROUP 8, YGH – K38 CAN THO UNIVERSITY OF MEDICINE – PHARMACY INTRODUCTION What is nervous system? Introduction Control Learning Memory