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The bladder also contains β 3 adrenergic receptors, and pharmacological agonists of this receptor are used to treat overactive bladder. The mucosa of the urinary bladder may herniate through the detrusor muscle. [6] This is most often an acquired condition due to high pressure in the urinary bladder, damage, or existing connective tissue ...
The pelvic splanchnic nerves contribute to the innervation of the pelvic and genital organs. [2] The nerves regulate the emptying of the urinary bladder, control opening and closing of the internal urethral sphincter, influence motility in the rectum as well as sexual functions like erection.
Neurogenic bladder dysfunction, often called by the shortened term neurogenic bladder, refers to urinary bladder problems due to disease or injury of the central nervous system or peripheral nerves involved in the control of urination. [1] [2] There are multiple types of neurogenic bladder depending on the underlying cause and the symptoms.
Nerve roots that control the function of the bladder and bowel are especially vulnerable to damage. It can lead to permanent paralysis, impaired bladder and/or bowel control, loss of sexual sensation, and other problems if left untreated. Even with immediate treatment, some patients may not recover complete function.
The internal sphincter muscle of urethra: located at the bladder's inferior end and the urethra's proximal end at the junction of the urethra with the urinary bladder. The internal sphincter is a continuation of the detrusor muscle and is made of smooth muscle, therefore it is under involuntary or autonomic control.
The urinary bladder of teleosts is permeable to water, though this is less true for freshwater dwelling species than saltwater species. [37]: p. 219 In freshwater fish the bladder is a key site of absorption for many major ions [46] in marine fish urine is held in the bladder for extended periods to maximise water absorption. [46]
It is located at the junction of the urethra with the urinary bladder and is continuous with the detrusor muscle, [1] [2] but anatomically and functionally fully independent from it. [3] It is composed of smooth muscle, so it is under the control of the autonomic nervous system, specifically the sympathetic nervous system.
The nerves composing it are numerous, and contain a large proportion of spinal nerve fibers. They accompany the vesicle arteries , and are distributed to the sides and fundus of the bladder . Numerous filaments also pass to the seminal vesicles and vas deferens ; those accompanying the vas deferens join, on the spermatic cord , with branches ...
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