Functional Overview of the Nervous System. Dr. Ersin Koylu EÜ Tıp Fakültesi Fizyoloji AD
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1 Functional Overview of the Nervous System Dr. Ersin Koylu EÜ Tıp Fakültesi Fizyoloji AD
2 Autonomic System Sympathetic System Motor System Cental Nervous System Peripheral Nervous System NERVOUS SYSTEM? Sensory Systen Parasympathetic System
3 Topographic Classification Central nervous system Peripheral nervous system
4 Functional Classification Internal Environment Autonomic Nervous System Nervous System Somatic Nervous System External Environment Consciousness Unconsciousness
5 Autonomic Nervous System Sympathetic part Parasympathetic part Internal Environment Autonomic Nervous System Nervous System
6 Somatic Nervous System Sensory Functions Nervous System Somatic Nervous System External Environment Mental Functions Motor Funnctions
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8 Autonomic Part Somatic Part
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11 Autonomic Nervous System
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13 Control of Autonomic Nervous System Hypothalamus Brain stem Medulla spinalis
14 Organ System Controlled by Autonomic Nervous System Cardiovascular (heart and blood vessels) system Gastrointestinal system Respiratory system Urinary system Liver Endocrine system
15 Ganglions in Autonomic System
16 N. Oculomotorius N. Facialis N. Glossopharyngeus N. Vagus
17 Effect of sympathetic and parasympathetic divisions
18 Effects of Autonomic Nervous System Organ Parasympathetic Cholinergic Effect Sympathetic Adrenergic Effect Eye Constricts pupil (miosis) Dilates pupil (mydriasis) Nose Lungs Heart Vasodilatation, Increased mucus secretion Constriction of bronchial muscles (restriction of airway) Decreased heart rate and strength Vasoconstriction, Decreased mucus secretion Relaxation of bronchial msucles (dilatation of airway) Increased heart rate and strength, dilatation of coronary arteries Mouth İncrease in saliva Decrease in saliva, dry mouth Gastrointestinal Tract Increase in digestive secretion and motility Decrease in digestive secretion and motility
19 Somatic System Autonomic System
20 Brain Voluntary control Spinal cord Reflex control Stretch receptors stimulated by full bladder Impulses cause detrusor muscle contraction Bladder Sensory neuron Interneuron Inhibitor interneuron Motor neuron
21 Sensory Systems
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24 Classification of Senses 5 Basic senses Vision Hearing Touch Taste Smell
25 Detailed Classification Visual system Vision Auditory system Hearing Gustatory system Taste Olfactory system Smell Somatic system Touch Thermal Itch Proprioception Pain Vestibular system Balance Proprioception: The sense which we perceive the position and movement of our body and extremities
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27 The nerve signals generated by the sensory stimuli become a conscious SENSATION in the cortex
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29 Control of Movement: Motor Systems
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31 Parts of the Nervous System Involving Motor Control Motor cortex Basal nuclei (ganglia) Cerebellum Medulla spinalis (spinal cord) anterior horn cells Peripheral (spinal) nerves
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34 Voluntary and involuntary movements Voluntary movements are executed by the motor cortex The involuntary movements (reflex) are controlled by the medulla spinalis
35 Consciousness, Behavior and Cognitive Functions
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37 Consciousness Consciousness of a person From coma to extreme attention Electrical recording of brain activity (electroencephalogram = EEG)
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39 Sleep-Wake Wakefulness: Brain stem (Reticular Activating System = RAS) Day-night cycle Hypothalamus (suprachiasmatic nucleus)
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41 Behavioral Functions of Nervous System (Instinct and Affect) Motivation (driven behavior) Emotions
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43 Cognitive Functions
44 Memory Sensory Short-term Long-term Implicit (non-declarative: non-verbal) Explicit (declarative: verbal) Procedural Priming Associative learning: Classical and operant conditioning Non-associative learning: habituation and sensitization Semantic (facts) Episodic (events)
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48
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