Nervous system for Medical Transcriptionist

1. Nervous system(CNS) Is the chief controlling & co-ordinating system of the body. It controls the voluntary & involuntary activities of the body & adjust the individual to given surroundings. Nerves are the protoplasmic extension of the nerve(neuron) form the neural pathways called the nerves. Impulses are given out to brain & goes out the whole body is called as efferent pathway & impulses going from body to brain are the afferent pathway. Parts of the nervous system Central nervous system Peripheral nervous system brain Spinal cord 12 cranial nerve 31 spinal nerve Autonomic nervous system sympathetic parasympathetic

2. Face & scalp sensation, taste 7.Facial Eye mov. & face & scalp sensation 6. Abducens Sensation over face , scalp 5.Trigeminal Opthalmic Mandibular maxillary -----,,------- 4.Trochlear Eye mov. 3.Occulomotor Vision 2. Optic Smell 1.Olfactory Function Cranial nerve Tongue movement 12. Hypoglossal Neck and back muscle 11. Accessory Throat, voice box, larynx, chest abdomen viscera 10. Vagus Tongue & throat sensation 9. Glossopharyngeal Hearing and balance 8. Vestibulocochlear nerve

3. There are 3 types of nervous tissue in the N.S Neuron or excitable cell Non-excitable cell or neuralgia Structure of Neuron and pathway

4. There are 3 types of nervous tissue in the N.S Neuron or excitable cell Non-excitable cell or neuraglia Structure of Neuron and pathway

7. Autonomic nervous system (controls the involuntary activities like sweating, salivation, peristalsis Sympathetic nervous system Widespread & diffused activity to combat acute emergencies. Arises from thoracolumbar outflow, as it arises from T1-L2 segments of Spinal cord.There are two types of fibre Medullated & Non-medullated Neurotansmitter is nor-adrenaline, exception are the cholinergic Sympathetic nerves supplying the sweat & skeletal muscles Parasympathetic N.S It combats chronic emergencies It is the craniosacral outflow which contains CN 3,7,9,10 & sacral S1, S2 segments.It releases neurotransmitter like acetylcholine

8. Brain Cerebrum (two hemispheres) Made up of white & grey matter Spaces within the tissue are the VENTRICLES which contain CSF Below it lies the Thalamus & Hypothalamus Covering are Duramatter, arachnoid & piamatter Cerebellum Located beneath the posterior part of Cerebrum, co-ordinates Voluntary mov. Maintains balance Posture & Muscular tone Brainstem Midbrain Pons means bridge. It contains nerve tract that Connects Cerebrum & Cerebellum with Rest of brain Medulla oblongata Located at the base Of brain, it connects Spinal cord with Rest of the brain. It continues below As spinal cord Frontal Parietal Occipital Temporal

9. Symptoms ataxia Order Tax/o Syncopal Cut short Syncop/o Neurasthenia Strength Sthenia Apraxia Action Praxia Hemiplegia Paralysis Plegia Aphasia Speech Phasia Hemiparesis Slight weakness Paresis Dyslexia Word Lex/o Epilepsy/narcolepsy Seizure Lepsy Hyperkinesis Movement Kinesis Bradykinesia Movement Kinesia Anesthesia Nervous sensation Esthesia Comatose Deep sleep Comat/o Causalgia Burning Caus/0 Neuralgia Pain Algia Analgesia Sensitivity to pain algesia Terminology Meaning Suffix