Anatomy and Cell Biology 2221 Lecture Notes - Lecture 8: Medulla Oblongata, Teres Minor Muscle, Meninges
27 Feb 2017
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Document Summary
50-75% of dementia is estimated to be caused by the disease. Alzheimer"s disease (cid:523)ad(cid:524) is the world"s leading cause of dementia and the. Parkinson"s disease (cid:523)pd(cid:524) is the world"s second commonest form of ndd. More than 50, 000 strokes occur in canada each year. For every 100, 000 canadian children under the age of 19, there are 6. 7. About 300, 000 canadians are living with the effects of stroke. Adding them all= 16% of population is effected by some form of neurological disorder. Cns: brain, spinal cord, 100 billion cells that make up brain, 100 million in spinal column. Pns: cranial nerves, spinal nerves, ganglia, enteric plexuses in small intestine, sensory receptors in skin, far few than cells than cns. Sensory components of the pns= communicates with the brain: somatic, visceral, enteric. Effectors muscles, digestive system, glands, smooth muscles, etc. Neurons: specialized for carrying electrical signals, synapses switching point to exchange communication between, targets effector cells nerves.
