Anatomy and Cell Biology 2221 Lecture Notes - Lecture 8: Popliteus Muscle, Superior Sagittal Sinus, Phrenic Nerve

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Week 8: nervous tissue, the spinal cord and nerves. Identify the cellular features of the nervous system and their role. Organize the nervous systems into receptive (sensory) and productive (motor) components. Name the features of the spinal cord. Describe the features of the spinal cord segments. Neurodegenerative diseases: alzheimer"s diseases is the worlds leading cause od dementia and most prevalent. 50-75% of dementia is caused by this disease: parkinson"s disease is the world second most common form of ndd. Stroke: more than 50,000 strokes each year, for every 100,000 children under 19, there are 6. 7 strokes, about 300,000 canadians are living with the effects of a stroke. Cns: brain and spinal cord; 100 billion neurons in skill, another 100 million in cord. Pns: cranial nerves, spinal nerves, ganglia, enteric plexuses in small intestine, sensory receptors in skin; fewer cells all over the body than in the cns. Neurons: specialized for carrying electrical signals, synapses, targets effector cells.

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