Where does the concentration and dilution of urine occur?
a. In the juxtamedullary nephrons c. In the peritubular capillaries
b. In the cortical nephrons d. In the internal nephron
A
The juxtamedullary nephrons have long loops of Henle that have an important role in the concentration and dilution of urine. The peritubular capillaries, known as the vasa recta, surround the juxtamedullary nephrons, maintaining a concentration gradient to concentrate the urine. Most nephrons are cortical nephrons. Both types of cortical nephrons perform excretory and regulatory functions.
You might also like to view...
A patient beginning therapy with cabergoline (Dostinex) asks the nurse about the purpose of the drug. The nurse correctly responds that the primary indication for this drug is to
a. inhibit the release of antidiuretic hormone (ADH). b. inhibit the release of prolactin. c. prevent hyperthyroidism. d. reduce the possibility of corticotropin deficiency.
The nurse is counseling a group of clients recovering from substance abuse about the nature of denial. Which of the following interventions should the nurse teach the clients to use to help them gain insight into their denial?
A) Teach them to question whether they feel threatened B) Teach them meditation techniques C) Teach them alternative coping strategies D) Teach them to have realistic expectations about themselves
A nurse has catheterized a client to obtain urine for measuring postvoid residual (PVR) amount. The nurse obtains 40 mL of urine. What should the nurse do next?
A) Report this abnormal finding to the physician. B) Perform another catheterization to verify the amount. C) Document this normal finding for postvoid residual. D) Palpate the abdomen for a distended bladder.
A client who takes benztropine (Cogentin) has developed constipation. Which interventions should the nurse implement?
A. Instruct the client to administer an enema. B. Encourage the client to take docusate (Colace) daily. C. Instruct the client to increase their fluid intake. D. Encourage the client to walk daily E. Instruct the client to discontinue their prescription until their bowel function returns to normal.