NR 507 Advanced Pathophysiology Week 2 Quiz (Questions And Answers) Revised & Updated 2023.

NR 507 Advanced Pathophysiology Week 2 Quiz (Questions And Answers) Revised & Updated 2023. Question 1 2 / 2 pts Which are indications of dehydration? Correct! Tachycardia and weight loss Decreased hemoglobin and hematocrit Muscle weakness and decreased deep tendon reflexes Polyuria and hyperventilation Marked water deficit is manifested by symptoms of dehydration: headache, thirst, dry skin and mucous membranes, elevated temperature, weight loss, and decreased or concentrated urine (with the exception of diabetes insipidus). Skin turgor may be normal or decreased. Symptoms of hypovolemia, including tachycardia, weak pulses, and postural hypotension, may be present. Question 2 2 / 2 pts At the arterial end of capillaries, fluid moves from the intravascular space into the interstitial space because the interstitial hydrostatic pressure is higher than the capillary hydrostatic pressure. capillary oncotic pressure is lower than the interstitial hydrostatic pressure. interstitial oncotic pressure is higher than the interstitial hydrostatic pressure. Correct! capillary hydrostatic pressure is higher than the capillary oncotic pressure. At the arterial end of capillaries, fluid moves from the intravascular space into the interstitial, because capillary hydrostatic pressure is higher than the capillary oncotic pressure. Question 3 2 / 2 pts Which enzyme is secreted by the juxtaglomerular cells of the kidney when circulating blood volume is reduced? Angiotensin II Aldosterone Angiotensin I Correct! This study source was downloaded by from CourseH on :46:29 GMT -06:00 Renin When circulating blood volume or blood pressure is reduced, renin, an enzyme secreted by the juxtaglomerular cells of the kidney, is released in response to sympathetic nerve stimulation and decreased perfusion of the renal vasculature. Question 4 2 / 2 pts In hyperkalemia, cardiac rhythm changes are a direct result of Correct Answer cardiac cell hypopolarization. cardiac cell repolarization. You Answered cardiac cell hyperexcitability. depression of the sinoatrial (SA) node. If extracellular potassium concentration increases without a significant change in intracellular potassium, the resting membrane potential becomes more positive (i.e., changes from –90 to –80 mV) and the cell membrane is hypopolarized (the inside of the cell becomes less negative or partially depolarized [increase excitability]). (Electrical properties of cells are discussed in Chapter 1.)