Answer Happy

Which is a true statement about the urination reflex? For most of the day, descending signals from brain inhibit motor neurons to the external urinary sphincter. Bladder stretch receptors inhibit motor neurons to the bladder's smooth muscle walls. Bladder stretch receptors inhibit motor neurons to the urinary sphincter. All of the above are true. None of the above is true. Which of the following is a true statement? The renal cortex has a much higher osmolarity than does the renal medulla. In a nephron, filtration only occurs in the proximal and distal tubules. The collecting ducts of all the nephrons drain toward the renal cortex. After blood passes the glomerulus and enters the efferent arteriole it will become part of the urine. None of the above is true.