Ch. 24 Urinary System
Based on what you know about the location of the kidneys in the posterior abdominal wall, the hilum of the kidney must be at the level of which vertebra?
L1 or L2
Vessels and nerves enter and leave the kidney through the
medial hilum
If you looked closely at the tip of a renal papilla with a hand lens, the hundreds of little openings you would see on its surface are
openings of papillary ducts
Before it enters the ureter, urine collects in the
renal pelvis
An important difference between the peritubular capillaries and the vasa recta in the kidney is that
the vasa recta are in the medulla, whereas the peritubular capillaries are in the cortex
Why are urinary tract infections more common in females than in males?
In females the urethra is shorter than in males
Urine flows from the kidney to the bladder by gravity and peristalsis
True
Renin is produced in
the granular cells
Which of the following conditions is most often seen in elderly males with prostatic hyperplasia?
urinary retention
Which of the following is not part of the filtration membrane?
granular cells
The internal urethral sphincter is composed of smooth muscle and is under involuntary control
True
Urine drains from the kidney in the following sequence: from the collecting duct to the minor calyx to the major calyx to the renal pelvis and then to the ureter
True
Cortical and juxtamedullary nephrons can be distinguished by the absence of a vasa recta in the cortical nephrons
True
In females, the urinary bladder lies anterior to the vagina and uterus
True
The kidneys lie behind the ________ cavity
abdominal