BIO310H5 Lecture Notes - Lecture 14: Calcitriol, Sodium Chloride, Metabolic Waste
Document Summary
Osmoconformer - an animal that does not actively control the osmotic condition of its body fluids and instead conforms to the osmolarity of the surrounding medium. Osmoregulator - animals that maintain an internal osmolarity different from the medium in which they are immersed. Total body water (tbw) = 0. 6 x body weight (kg) Normal water intake = normal water loss. Normal nacl intake = normal nacl loss. Therefore: normal water and salt losses = normal water and salt gain. Major ionic components are na+ , cl- , hco3 - Regulation of water, ion balance and acid-base balance. Removal of metabolic waste from blood & excretion in urine. Removal of foreign chemicals from the blood and their excretion in the urine. B) 1,25 dihydroxy vitamin d (calcitriol)- important for calcium homeostasis. C) renin an enzyme important for. Angiotensin ii production blood pressure and na+ regulation. Humans produce ~1l of urine each day . Contains: -water + metabolism by-products (urea), nacl,
