Read the given statements regarding human excretory system and select the correct ones.
(i). Presence of glucose in urine is known as uremia.
(ii). Distal convoluted tubule (DCT) selectively secretes hydrogen ions, ammonia and potassium ions into the filtrate.
(iii). Macule densa is formed by cellular modification in the distal convoluted tubule and the afferent arteriole at their contact location.
(iv). Atrial natriuretic factor (ANF) can cause vasoconstriction when blood flow is low to the atria of the heart.