The overall purpose of the countercurrent exchange system is to
a. supply nutrients and oxygen to the renal medulla
b. supply salt and urea to the renal medulla
c. remove metabolic wastes from the renal cortex
d. supply nutrients and oxygen to the renal cortex
e. remove metabolic wastes from the renal medulla

Complete the following sentence that describe the alimentary canal and its walls: the is composed mostly of connective tissue, nerves, and vessels, which to nourish surrounding tissues.

Which of the following is considered to be a primary responsibility of a pharmacy technician? a. writing prescriptions b. greeting customers c. increasing company sales d. counseling patients

Mr rogers is 2 days postoperative of a thoracotomy of removal of a malignant mass in his left chest. his pain is being managed via epidural catheter with morphine. as the nurse assumes care of mr rogers, he is alert and fully oriented and states that his current pain is 2 on a 1 -to-10 scale. his vital signs are 37.8-92-12, 138/82. what are benefits of epidural versus systemic administration of opioids? the nurse monitors mr roger’s respiratory status and vital signs every 2 hours. what is the rationale for this frequent assessments? the nurse monitors mr rogers for what other complications of epidural anelgesis?