NURS 611 Test 1 Patho Maryville University: Questions and Answers
NURS 611 Test 1 Patho Maryville University: Questions and Answers what triggers thirst osmoreceptors are activated by increase in osmotic pressure of the plasma What populations are vulnerable to fluid volume deficit? Infants: 75-80%TBW; baby Thompson? diarrhea and increased extracellular fluid Obese: fat is water repelling Elderly: decreased thirst sensation Oncotic pressure influenced by plasma proteins; a reduction in plasma oncotic pressure causes low plasma albumin/protein and leads to edema RAAS; Explain this system Renin Angiotensin Aldosterone System When there is a drop in blood pressure the JG cells release renin in response to stimulation from sympathetic nerve cells. The decreased perfusion or pressure as well as low Na+ activates the macula densa cells to release prostaglandin What are natriuretic peptides hormones that decrease blood pressure and increase Na+ and water excretion (antagonist of the RAAS because RAAS works to increase BP and NP decrease) atrial natriuretic peptide (ANP) produced by the myocardial atria brain natriuretic peptide (BNP) produced by the myocardial ventricles urodilatin within the kidney
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