The main muscle in the bladder is called the Detrusor muscle (which is a smooth muscle). it is circular.
Overactive bladder
The Bladder Wall
Smooth
detrusor muscle
Bladder wall thickening is exactly what it sounds like. The wall of your bladder is thickening if you have bladder wall thickening.
Yes it does relax. When the detrusor muscle, part of the bladder wall, constricts, you urinate. In a high energy situation, when sympathetic stimulation is occurring, you wouldn't want to urinate, so the wall must relax.
The micturition response is triggered by a combination of a full bladder sending sensory signals to the brain, voluntary relaxation of the external sphincter, and involuntary contraction of the bladder muscle (detrusor muscle) mediated by the parasympathetic nervous system. This process helps to empty the bladder of urine.
The bladder wall is the outside of the bladder, the organ that stores urine.
Urinary bladder mainly contains two types of musces 1. Smooth muscles, forming the wall of the bladder ( Detrusor muscle ) and the internal urethral sphincter ( which controls the flow of urine which is involuntary ), and 2. Skeletal muscle, which forms the external urethral sphicter with which we can control the flow of urine.. ( voluntary control of flow )
The bundles of interlaced muscular fibers in the wall of the urinary bladder comprise the internal urethral sphincter. The contraction of the internal urethral sphincter prevent the bladder from emptying until the urinary pressure reaches a certain level.
Smooth muscle tissue is located in the wall of the digestive tract.
Because your bladder is only designed to hold so much. Once it reaches a point where the tissues are stretched too far, the nerve endings in the bladder send pain signals to your brain. The muscle that is part of the layered bladder wall, the detrusor muscle, starts to contract, increasing the pressure. At that point, break off what you're doing and go!