NUR 300 Lecture Notes - Lecture 10: Urethral Sphincters, Prostaglandin E2, Prostacyclin
Document Summary
Kidneys: removes waste from the blood to form urine. Ureters: transports urine from the kidneys to the bladder. Bladder: reservoir for urine until the urge to urinate develops. Urethra: urine travels from the bladder and exits through the urethral meatus. Erythropoietin stimulates bone marrow to produce red blood cells and prolongs the life of mature rbc. Production of renin, prostaglandin e2, and prostacyclin affects blood pressure. Voiding: bladder contraction + urethral sphincter and pelvic floor muscle relaxation: bladder wall stretching signals micturition center. Unable to control voiding until 18 to 24 months. To keep na levels within a normal range the kidney alters the production of urine. Too much na often leads to high blood pressure. Posterior pituitary gland releases adh to trigger the kidneys to stop producing urine until na concentration returns to normal. Decreases the release of antidiuretic hormones, thus increasing urine production. Should pee 5 to 6 times a day.
