True: The glomerulus lies close to the cortex-medulla junction., Descending limbs of the nephron loop consist of simple squamous epithelium., The distal convoluted tubule (DCT) almost entirely lacks microvilli compared to the proximal convoluted tubule (PCT)., Cortical nephrons are the most numerous and make up about 85% of nephrons., Filtrate in the glomerular capsule empties into the PCT., The vasa recta is found in the Juxtamedullary nephron., The mucosa layer inside the ureter contains a transitional epithelium that is continuous with the mucosa of the kidney pelvis and bladder., The external urethral sphincter is composed of skeletal muscles., Urine exits the kidney through the Ureter., The Urinary Bladder can expand more to hold urine., Near the bladder, the mucosal lining of the urethra becomes transitional epithelium and near the external opening it changes to a protective stratified squamous epithelium., Adventitia is a layer that within the ureter. , In the bladder, the walls are thick and the mucosa is thrown into folds known as rugae., The Internal urethral act as a gate to release the urine outside the bladder, The rugae disappear when urine accumulates., The muscular layer of the bladder wall is called the detrusor and consists of intermingled smooth muscle fibers., The bladder is located retroperitoneally on the pelvic floor., The urinary bladder's function is to store urine., The urethra is a muscular tube that conveys urine from the bladder to the body exterior., False: There are 3 kinds of nephrons., Each nephron consists of a renal corpuscle OR a renal tubule., Cortical nephron has long loops., Micturition reflex does not associate with activating stretch receptors in the bladder wall., The collecting duct receives urine only from the Cortical nephron., The ascending limb of the nephron is thin., The long male urethra has three regions prostatic, intermediate, and internal., The External Urethral sphincter is only found with females., When urine is accumulated, the bladder expands and becomes an apple shape., In the juxtamedullary nephron, efferent arteriole supplies peritubular capillaries., A moderately full bladder can hold up to approximately 600 ml of urine., The muscularis layer in the ureter is composed of 3 smooth muscle sheets., The smooth muscle fibers in the bladder wall are arranged in the inner and outer longitudinal layers., The involuntary sphincter is known as the external urethral sphincter. (controlled by autonomic nervous system which keeps the urethra closed when urine is not being passed), The internal urethral sphincter surrounds the urethra as it passes through the urogenital diaphragm., In order to prevent backflow of urine, each ureter begins at the level of L2 as a continuation of the renal pelvis and ascends in front of the peritoneum and runs obliquely through the anterior bladder wall., Urine is less than 50% water., The external sphincter is involuntary.,

Urinary Anatomy

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