How Does the Bladder Work?
Insert name of presenter here
Urinary System
The urinary system is responsible for getting rid of waste products in the form of urine.
Urinary System
Kidney: Removes waste products from the blood and produces urine
Ureter: Moves the urine from the kidneys to the bladder
Bladder: Holds the urine until it is full
Urethra: The tube through which the urine flows out of the body
Anatomy of the Urinary Tract
Female
Upper Urinary Tract
Male
Kidney Ureter
Lower Urinary Tract
Bladder
Urethra
Anatomy of the Female Urinary Tract
Ureter
Abdominal muscles
Rectum Bladder
Pubic bone
Pelvic floor External urethral sphincter
Urethra Vagina
Anatomy of the Male Urinary Tract
Ureter Rectum Internal urethral sphincter Pelvic floor External urethral sphincter Abdominal muscles
Bladder Pubic bone
Prostate gland
Urethra
Penis
Structure of the Bladder
Ureter
Detrusor smooth muscle
External urethral sphincter Pelvic floor Prostate gland
Detrusor Muscle (x25)
Mucous membrane
Smooth muscle and connective tissues
Muscarinic Receptors in the Parasympathetic Nervous System
CNS
Iris/ciliary body Lacrimal gland Parotid gland Sublingual gland Submaxillary gland Heart Liver Visual disturbances Dry mouth
Palpitation/Tachycardia
Stomach Colon Small intestine Detrusor muscle Constipation
Urinary retention
Micturition Reflex
Brain Direction of nerve impulse
Spinal cord
Bladder
Pelvic floor
Bladder Control System
bladder muscle bladder muscle
bladder
urine
urine
bladder
Urethra closed
Urethra open
Sphincter Muscles Squeezed Shut
Sphincter Muscles Relaxed
Bladder Filling & Emptying Cycle
1. Bladder fills
Detrusor muscle relaxes
Urethral sphincter contracts
2. First desire to urinate (bladder half full)
The cycle of bladder filling and emptying
Detrusor muscle contracts
Urethral sphincter relaxes
Urination
3. Urination voluntarily inhibited until time and place are right
Normal Control of Urination
Overactive Bladder