AAMI Anatomy 1 Practice Exam

Urinary bladder stores urine prior to micturition. It’s a distensible reservoir that receives urine from the ureters and holds it until voiding. The detrusor muscle lets the bladder expand as it fills, and stretch receptors trigger the micturition reflex when a sufficient volume is reached, coordinating bladder contraction with relaxation of the sphincters to expel urine through the urethra. The kidneys form urine and the ureters transport it to the bladder, making the bladder the storage site.