Cоmplete eаch sentence belоw tо show your understаnding of the mаjor mechanisms by which a decrease in total-body Na+ elicits a compensatory change in the glomerular filtration rate (GFR). 1. an increase in Na+ and H2O loss in the body leads to a/an [q1] in plasma volume, and subsequently a/an [q2] in venous, arterial, and atria pressures. 2. Reflexes mediated by [q3] increase/s the activity of renal sympathetic nerves. 3. Increased sympathetic output increases the [q4] of [q5] renal arterioles, which decreases the net glomerular filtration pressure. 4. This directly leads to a/an [q6] in [q7] , which [q8] the excretion of Na+ and H2OH2O Na+