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How Does the Bladder Work?
Presented by (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
Lower
Urinary
Tract
Male
Kidney
Ureter
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
Visual disturbances
Iris/ciliary body
Lacrimal gland
Dry mouth
Parotid gland
Sublingual gland
Submaxillary gland
Heart
Palpitation/Tachycardia
Liver
Stomach
Colon
Small intestine
Constipation
Detrusor muscle
Urinary retention
Micturition Reflex
Brain
Direction of
nerve impulse
Spinal cord
Bladder
Pelvic floor
Bladder Control System
bladder muscle
bladder
urine
Urethra closed
Sphincter Muscles
Squeezed Shut
bladder muscle
bladder
urine
Urethra open
Sphincter Muscles
Relaxed
Bladder Filling & Emptying Cycle
1. Bladder fills Detrusor muscle relaxes
Urethral
sphincter
contracts
Detrusor
muscle
contracts
Urination
The cycle of
bladder filling
and emptying
Urethral sphincter relaxes
3. Urination
voluntarily inhibited
until time and place
are right
2. First desire to
urinate (bladder
half full)
Normal Control of Urination
Overactive Bladder