Physiology Exam, CCL 3 Study Guide

Physiology Exam, CCL 3 Study Guide - Physiology Exam 3, CCL...

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Physiology Exam 3, CCL Study Guide: Neurophysiology to Cranial Nerves 56 multiple choice questions Know the following neurotransmitters, what they do and where they are located: 1. Angiotensin II Located Cut- Brain Peptides which is part of the neuropeptides; involves with thirst in the brain; as a hormones promotes release of aldosterone (ALDO), which 2. Curare Are antagonists located in miscellaneous, part of N T An ACh antagonist b/c it blocks the action of ACh @ receptor sites, therefore no muscle movement: Paralysis is the side effect 3. Endorphins Located on the Opoid Peptides which is located on the neural peptides; concentrated in the Pituitary Gland; inhibits pain by blocking release of Substance-P; closes euphoric feeling (Runner’s High- ppl who feel gud after dey run) 4. Epinephrine It’s a versatile N T ↓levels of Norepinephrine depression; treated by destroying or inhibiting the enzyme that are going to be inactive (kill/treat it before you get in yo feelins) Produced by Adrenal Glands, found in Catecholamines 5. GABA (Gamma Amino Buteric Acid) @ all synaptic- inhibits CNS to regulate anxiety and “keeps a lid” on neuronal excitement If GABA to decreased there will be ↑ anxiety; anti-anxiety drugs like Valium enhances GABA activity 6. Histamine Made from Histidine; in the PNS it acts as a vasodilation; ↑ gastric secretions; in the CNS in the hypothalamus is where anti-histamines work; secreted by mass cell; located in the indolamines which is part of Biogenic Amines 7. Nicotine Are agonists located in miscellaneous; part of N T Stimulates ACh receptors therefore Nicotine AKA Tobacco is an ACh agonist 8. Nitric oxide Formal Arginine by enzyme called NO-synthesis; very toxic at high levels; involves w/ learning & memory in CNS; lipid soluble; had a brief action; 9. Vasopressin Part of the neuropeptide; located in the brain and improves memory; as a hormone: regulates reabsorption of H2O by the kidneys and therefore controls BP (SN: diuretic makes you gotta go—anti-diuretic makes you don’t gotta go [hence u retaining H2O]) 10. Absolute refractory period Times period b/w depolarization (Na+ in flow) & repolarization (K+ out flow); time period from which the Na+ channels start to open until it close; The neuron may not respond to another stimulus no matter how strong it is; RMP must be reestablished before the neuron may fire again 11. After-hyperpolarization During repolarization the K+ channels are still opened and the K+ efflux lasts longer than necessary 12. Alzheimer’s disease Senile Dementia (progressive loss of intellectual abilities) Confusion, disorientation, loss of motor skills
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13. Arachnoide villus AKA Arachnoidal Granulation One of the many projections of the fibrous tissue from the arachonoid membrane
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Physiology Exam, CCL 3 Study Guide - Physiology Exam 3, CCL...

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