Re: Urinary development T/F

Comments:
: : : Development of the Urinary System: T/F : If anyone went to Angel and found the T/F you will notice there is one question that cannot be answered based on the lecture I gave this year. You can completely ignore that question. If you haven't seen it, don't bother. :) : If anyone is having issues finding my lecture on Angel, it is in the folder called "Anna Campbell". My maiden name is Kober (I wasn't married when I enrolled as a Penn State student). This often leads to confusion because sometimes I still appear as "Kober" on your course materials. However, on Angel, and in most other areas of life, I'm Anna Campbell. : : : 1.An important source of primordial tissue for development of the urogenital system is the nephrogenic cord, derived from lateral mesoderm.False- it is derived from intermediate mesoderm. : Correct. : : : 2.The metanephroi, the intermediate set of kidneys, develop in the cervical region and function for a short time in fetal life. False- this would be the mesonephroi. Agree. Also note that is the pronephroi that are described as developing in the cervical region. Mesonephroi develop in the thoracic and lumbar region. Metanephroi develop in the sacral region, then "ascend". : : : 3.Ascent of the kidneys is attributed primarily to the upward movement of the organs. False- it is actually due to caudal growth. This is why the kidneys actually need three sources of blood : Correct. : : : 4.A horseshoe kidney typically cannot ascend to the adult position because it gets caught up on the superior mesenteric artery at L3. False. L3 is the position of the Inferior mesenteric artery. : Correct. : : : 5.The metanephric blastema gives rise to the collecting duct system, whereas the ureteric bud gives rise to structures that compose a nephron. False. The opposite is true. The ureteric bud gives rise to the collecting duct, renal calices, adn ureter. The 'hat' or blastema gives rise to the functional unit of the kidney, the nephron. : Correct. : : : 6.The cloaca is partitioned by the urorectal septum into the ventrally located rectum, and dorsally located UG sinus. False. The UG sinus is ventral (hopefully) and is divided in to the vesicular (hence the supravesicular fossa), pelvic,and phallic portions. : Correct. : : : 7.The trigone of the bladder represents an area where the primitive ureters were incorporated into the anterior inferior bladder wall. False. This would be the posterior bladder wall (dorsal side). : Correct. And it would even be more correct to state that the mesonephric ducts get incorporated into the posterior inferior bladder wall as they separate away from the primitive ureters. : : : 8.The epithelium of the lower urinary tract is primarily derived from ectoderm. False. It is mostly derived from endoderm. Ectoderm does line the most distal aspect of the male urethra. : Correct. : : : 9.The urachus underlies the medial umbilical folds. False. Median umbilical folds. : Correct. And it's just one fold, so singular. : : : 10.A urachal sinus is a malformation in which urine could travel from the bladder and exit the body by way of the umbilicus. True? If the superior part of the urachus also remains patent (a sinus is a dialation of the urachus). : Most likely false. If there is a sinus, it is typically not a complete passageway for urine. If the urachus remains entirely patent, then yes urine could escape. I don't love this question. : : Thanks Anna! : Welcome!

Link URL:  
Link Title:
Image URL: