BIO SCI 45 Study Guide - Spring 2018, Comprehensive Midterm Notes - White Matter, Syndrome, Myelin
12 Oct 2018
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Sensory neurons bring info to central nervous system. Interneurons associate sensory and motor activity in central nervous system. Motor neurons send signals from brain and spinal cord to muscles. Dermatomes are regions of the skin that the spinal nerves innervate. Maybe result from stroke or traumatic brain injury. Blood brain barrier doesn"t allow things to enter the brain. Antibiotics can"t get to the brain bc they"re too large. Microcephaly is when the brain doesn"t develop. Hydrocephalus is when the brain is too big. Water on the brain enlargement of ventricles with csf. Dementia is a syndrome involving loss of cognitive functions; it is an umbrella term. Alzheimer"s is the most common cause of dementia. Dementia can be reversible or irreversible whereas alzheimer"s is only irreversible. Aphasia: loss of ability to understand or express speech. Apraxia: inability to link skilled motor movements to ideas or representations. Agnosia: deficit in recognizing objects that occurs in the absence of deficits in sensory processing.
