In humans, the bladder is a hollow muscular organ situated at the base of the pelvis. In gross anatomy, the bladder can be divided into a broad fundus (base), a body, an apex, and a neck. The apex (also called the vertex) … See more

Urine is excreted by the kidneys and flows into the bladder through the ureters, where it is stored until urination (micturition). Urination involves coordinated muscle changes involving a reflex based in the spine, with … See more