WGU Pathophysiology D236 Exam Questions and Verified Answers

Describe how your body responds to an infection. Correct ans - T cells produce cytokines, which stimulate B cells. B cells produce antibodies. Identify role of DNA changes in congenital abnormalities. Correct ans - Mutations in genes or chromosomal abnormalities How does development disrupts congenital abnormalities? Correct ans - Alterations of DNA Describes factors that disrupt homeostasis and how disruptions affect wellbeing. Correct ans - (ex) Fluid and electrolyte shifts can cause n/v or dysrhythmias. Explain RAAS Correct ans - Renin-angiotensin-aldosterone system 1. Reduce blood flow causes kidneys to release renin > produce angiotensin I > converts angiotensin I to angiotensin II > vasoconstriction > release aldosterone > kidneys conserve sodium and water > Result less water lost in urine and blood pressure maintained. DKA Correct ans - increased anion gap, decreased HCO3 How do kidneys compensate for alkalosis Correct ans - retain H and excrete HCO3 Untreated acidosis leads to an increase in which electrolyte? Correct ans - Potassium West Nile Virus Correct ans - Transmitted through the bite of an infected mosquito. Severe signs and symptoms; high fever, headache and stiff neck Lyme disease Correct ans - Tick-borne disease caused by the spirochete Borrelia burgdorferi. Erythema infectiosum Correct ans - a febrile upper respiratory illness in a child followed by the sudden appearance of red, flushed cheeks, "fifth