What is the function of aldosterone?
It increases both Nat and K+ reabsorption. It increases both Nat and K+ secretion.
It increases Na* reabsorption and K+ secretion.
It reduces Nat reabsorption and K* secretion.
It causes the urine to be more diluted.
The Correct Answer is B
A. It increases both Na⁺ and K⁺ reabsorption. It increases both Na⁺ and K⁺ secretion: This contradicts the actual function. Aldosterone causes Na⁺ reabsorption and K⁺ secretion, not reabsorption of both.
B. It increases Na⁺ reabsorption and K⁺ secretion: Aldosterone acts on the distal tubules and collecting ducts of the nephron, causing sodium reabsorption (to increase blood volume/pressure) and potassium excretion.
C. It reduces Na⁺ reabsorption and K⁺ secretion: This is the opposite of aldosterone's action.
D. It causes the urine to be more diluted: Aldosterone causes sodium (and water) retention, leading to concentrated urine. Dilution of urine is more associated with ADH inhibition.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. The voluntary phase of swallowing takes place within the mouth: The oral phase is under voluntary control and involves tongue movement to push the bolus to the oropharynx.
B. The epiglottis assists in propelling food into the trachea: This is incorrect. The epiglottis prevents food from entering the trachea by covering the glottis during swallowing; it does not propel food.
C. The involuntary portion of swallowing takes place in the pharynx: After the oral phase, swallowing becomes involuntary, involving reflexive contractions of pharyngeal muscles.
D. The mouth, pharynx and esophagus all take part in swallowing: All three structures are involved in the three phases of deglutition: oral, pharyngeal, and esophageal.
Correct Answer is D
Explanation
A. The kidneys are retroperitoneal: Kidneys lie behind the peritoneum, making them retroperitoneal organs.
B. The ureters connect the kidneys to the urinary bladder: The ureters transport urine from each kidney to the bladder.
C. The urethra of males is longer than the urethra of females: The male urethra is significantly longer, due to its passage through the penis.
D. The kidneys are at equal heights within the pelvic cavity: This is incorrect-the right kidney is lower than the left due to the position of the liver. Also, kidneys are located in the upper abdomen, not the pelvic cavity.
E. The right kidney is located more inferiorly than the left kidney: True-the right kidney lies lower than the left because of the liver's size.
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.