urinary system - OCPS TeacherPress
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Transcript urinary system - OCPS TeacherPress
URINARY
SYSTEM
“The urinary system rids the body of nitrogen wastes while regulating water,
electrolyte, and acid-base balance of the blood.”
-Elaine Marieb
Need to add tissue in
for honors; accidently
deleted
kidneys
Urine formation by filtering
blood
Regulates blood levels
of: ions, water,pH
ureters
Connect kidneys to
posterior bladder
Peristalsis (urine)
goblet cells = secretes
mucous to protect cells
from acidic urine,
Urinary bladder
collapsible, muscular sac
Located posterior to pubic
symphysis
Stores urine
Sphincter = skeletal muscle
Micturition: stimulated by
stretch receptors to spinal
cord (S2 and S3) to trigger
a spinal reflex causing
urination.
urethra
Bladder to exterior
Empties bladder by peristalsis
Males:
– 2 functions/2 systems: carries urine
& semen
Urinary tract infections
(UTI)
More females
Symptoms: painful urination, urinary urgency and
frequency, fever, cloudy or blood-tinged urine, even
back pain and severe headache
Bacteria can spread and cause bladder infection or
kidney infection
What is urine?
Mostly water
Solutes: urea (from breakdown of protein), uric acid (from breakdown
of nucleic acids), creatinine (from breakdown of creatine phosphate in
muscle fibers), sodium, potassium, ammonia,
NOT FOUND: glucose, proteins, rbc, hemoglobin, wbc, and bile