lecture 30 Flashcards
transitional epithelium makes what for protection
makes cytokeratin, a plaque protein.
these proteins are called uroplakins. and they protect the cells of the transitional epithelium and prevent urine passing between the cells
in the ureter wall, there isnt much distinguishing between what
there isnt much to distinguish between the lamina propria of mucosa and submucosa.
whats the wall of the bladder called
detrusor muscle
what is the shape of an emptied bladder
it has a pyramidal shape behind the pelvis
describe the epithelia changes of the urethra
transitional near the bladder, then columnar and then stratified squamous for protection near the opening
what do the goblet cells do for the urethra
At the point where we have columnar epithelium in the urethra, there are goblet cells and mucous glands. Mucous protects from urine and also prevents bacteria passing too far up the urethra, so no UTI.
where is it and what it do, internal urinary sphincter
junction of the bladder and urethra, its made by the detrusor muscle and its smooth muscle so under involuntary control
where is it and what it do, external urinary sphincter
Located where urethra passes through the urogenital diaphragm, Skeletal muscle, Voluntary control