PSL300H1 Lecture 5: Lecture 5 - Water and ion balance
Document Summary
Hormonal regulation of fluid, na+ and k+ balance. Male 68 years of age presents at physicians office, he has previously been treated for prostate cancer, has a history of marathon running and plays seniors ice hockey. He reports an increase in the number of falling incidents and recently attended the emergency room with a fractured wrist which is not healing. Morning acth - 7 pg/ml (normal 10 65 pg/ml) Most of the tie, water moves freely across membrane. Fluid filter out of the plasma enters into the tubule. In the lumen (tubule) -- excreted in the urine to the outside the body. In the plasma -- inside the body. Tubules fine tune materials for excretion and reabsorption. Filters 180l per day = total blood x 20-25 times. Disposes of metabolites: urea, excess glucose and ions, hormones Body fluids osmolarity: 300 mosm (solute concentration = isotonic) Fill in the blank : 10%, 0. 8%
