NURS305 Chapter Notes - Chapter 24: Glasgow Coma Scale, Parietal Lobe, Cranial Nerves
23 Dec 2016
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Pns includes the cranial, spinal, and peripheral nerves. Interprets pain, touch, pressure, vibrations, temp, and taste. Language general interpretive area (gnostic area) at the posterior end of the lateral sulcus in parietal and temporal lobes. Hearing, speech, and smell: limbic lobe hippocampus and several gyri. Functions for self-preservation such as pleasurable, unpleasant, or dangerous events, mood, and emotional responses aggression, Also controlling endocrine function of the anterior pituitary. Has 2 respiratory centres to control 1) expiration and inspiration 2) respiratory rate: medulla nuclei for cn viii and xii, also with vital autonomic centres for respiratory, cardiac, and vasomotor functions. Works with pons for smooth breathing rhythm. Also controls involuntary functions (sneezing, swallowing, vomiting: reticular formation contains ras (for alertness, wakefulness, attention) hiccoughing, and coughing) Protective structures of the cns: cranial meninges (dura, arachnoid, pia mater), csf (from choroid plexus in ventricles) and skull cover and protect the brain, csf flows into the subarachnoid space, also cushions the spinal cord.
