Ricardi - Assignment 2.docx

Ricardi - Assignment 2.docx - 31 Make a drawing of the...

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31. Make a drawing of the brain and spinal cord and identify the areas of formation, circulation and resorption of the cerebrospinal fluid (CSF).
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32. Make a drawing of the brain and label cerebellum, cerebrum, diencephalon, brain stem and the 3 meninges and explain the function of each of these areas. The cerebellum regulates and coordinates balance, posture and movement (it does not start the movement – it coordinates the movement).
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The cerebrum is 80% of the brain and consists of the hippocampus, olfactory bulb, basal ganglia/nuclei and the cerebral cortex. It is divided into 4 lobes (frontal, parietal, occipital, temporal) that control senses, thoughts and movement. The diencephalon is divided into the epithalamus (consisting of the pineal body, which produces melatonin to control circadian rhythms), thalamus (relay area between cerebral cortex and other areas; also plays role in levels of wakefulness and sleep) and the hypothalamus (connects the nervous system to the endocrine system; also produces hypothalamic hormones i.e. TRH, GHRH). The brain stem consists of 10 of the 12 cranial nerves, so many of the functions relate to cranial nerves. It’s divided into the midbrain (visual reflex centers prompt reflex
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