PET-3322 Chapter Notes - Chapter 12: Paraplegia, Vasomotor Center, Lumbar Puncture
5 Nov 2017
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Central nervous system: cns consists of brain and spinal cord. Brain regions and organization: adult brains have four regions, 1. ) Spinal cord exhbitis this basic pattern; however, pattern changes with ascent into brain stem: 2. ) Brain stem has additional gray matter nuclei scattered within white matter: 3. ) Cerebral hemispheres (cerebrum) and cerebellum contain outer layer of gray matter called the cortex: cerebrum and cerebellum also have scattered areas of gray matter nuclei amid and white matter. Contains three types of functional areas: motor areas control voluntary movement, sensory areas conscious awareness of sensation, association areas integrate diverse information, 2. ) Each hemisphere is concerned with contralateral (opposite) side of body: everything is crossed, ex) have a stroke on the left side of the brain and the right side will be affected by being droopy, etc, 3. ) Lateralization (specialization) of cortical function can occur in only one hemisphere: 4. ) Involved in conscious awareness of odors: gustatory cortex.
