The afferent arteriole supplies blood to glomerulus; The afferent arteriole has wider diameter than efferent arteriole;
This causes high pressure; leading ultra-filtration; of Glucose, amino acids, salts; urea and water filter into Bowman’s capsule; to form glomerular filtrate; WBC/RBC/ Blood cells, proteins are too large to pass through the capillary wall hence Remain in blood capillaries;
The filtrate flows to the P.C.T;
When amino acids, all glucose are selectively reabsorbed; back into blood stream; Many mitochondria provide energy for reabsorption / for active transport /against a conc gradient; The filtrate flows into loop of Henle moves by osmosis into the blood capillaries; Nacl is actively pumped from ascending arm into blood capillaries;
The filtrate flows into P.C.T; water is reabsorbed; salts reabsorbed; from D.C.T; The filtrate flows into collecting duct; where more water is reabsorbed; ADH influences the amount of water reabs;
The filtrate from collecting duct now referred to as urine / acc. Contents of urine e.g. excess salts, excess water, wastes products / is emplied into ureter into bladder; and out of the body through urethra.
lydiajane74 answered the question on October 27, 2017 at 14:12
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