1 DO marinate food in the refrigerator, rather than at room temperature. 2  DO marinate in re-sealable plastic bags, rather than in bowls or other containers. 3  They cut down on cleanup and allow you to evenly distribute the marinade. 4  But you can marinate in plastic, stainless steel or glass containers too.
Antidiuretic hormone is secreted from the posterior pituitary; it increases water permeability in the last segment of the distal tubule. Renin stimulates the renin-angiotensin-aldosterone system, which can increase systemic arterial pressure and change renal blood flow.
Tubular secretion occurs from the epithelial cells that line the renal tubules and collecting ducts. It is the tubular secretion of H+ and NH4+ from the blood into the tubular fluid (i.e. urine - which is then excreted from the body via the ureter, bladder, and urethra) that helps to keep blood pH at its normal level.