What is the role of the renin-angiotensin-aldosterone system in kidney function?
Production of intrinsic factor
Excretion of waste products
Regulation of blood pressure and fluid balance
Regulation of respiratory rate
The Correct Answer is C
A. Production of intrinsic factor: Intrinsic factor is produced by the stomach's parietal cells.
B. Excretion of waste products: While the kidney does this, the specific RAAS pathway is a hormonal system for pressure and volume control.
C. Regulation of blood pressure and fluid balance: RAAS causes vasoconstriction (increasing pressure) and aldosterone release (increasing sodium/water retention), which increases blood volume.
D. Regulation of respiratory rate: This is controlled by the medulla oblongata and chemoreceptors in the blood.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Orthostatic hypotension: When fluid volume is low (hypovolemia), the body cannot maintain blood pressure when changing positions (e.g., sitting to standing), leading to a significant drop in pressure and an increase in heart rate.
B. Bradycardia: Dehydration typically causes tachycardia (increased heart rate) as the heart tries to compensate for low blood volume.
C. Increased skin turgor: Dehydration causes decreased skin turgor (skin remains tented when pinched).
D. Edema in the lower extremities: Edema indicates fluid volume excess, not a deficit.
Correct Answer is A
Explanation
A. Fluid accumulation in alveoli: Pulmonary edema involves fluid leaking into the air sacs (alveoli). This creates a physical barrier that oxygen must pass through to reach the blood, severely impairing gas exchange.
B. Increased alveolar surface tension: While surfactant may be diluted, the primary cause of the gas exchange failure is the presence of the fluid itself.
C. Enhanced alveolar ventilation: Ventilation is severely decreased because the alveoli are filled with fluid instead of air.
D. Decreased alveolar capillary permeability: In many types of pulmonary edema (like ARDS), permeability is actually increased, causing the leak.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.