Summarize the processes and structures involved in excretion by the kidneys.

Answer 1

The Nephrons of the kidney is the structure that is responsible for the excretory function. The nephron is made up of two parts known as the renal corpuscle and the renal tubule. First, the renal corpuscle is divided into the glomerular capillaries (glomerulus) and the Bowman's capsule. In the renal corpuscle, the blood is filtered at a high pressure. The afferent arteriole is the arteriole that will bring blood into the glomerulus. The efferent arteriole is the arteriole which will take blood away from the glomerulus. The glomerulus is located in a "cup-shaped" structure which is known as the Bowman's Capsule. The Bowman's Capsule and the glomerulus filtrate the blood to form urine. The renal tubule will consist of the proximal convoluted tubule, the Loop of Henle, and the distal convoluted tubule. After the blood has been filtered in the renal corpuscle, the fluid is known now as glomerular filtrate. First the glomerular filtrate passes through the Proximal Convoluted Tubule. in the PCT, potassium, water, glucose, NaCl, and bicarbonate will be reabsorbed from the filtrate whereas substances such as urea are added to the filtrate. From here, the filtrate will go into the Loop of Henle where the reabsorption of water and other substances happen. Then, the filtrate passes into the distal convoluted tubule, renal pelvis, ureters, urinary bladder.