How is the mammalian kidney/ nephron adapted/ suited to its function?

i.Afferent arteriole has a wider lumen than efferent arteriole creating high-pressure; that enables ultra-filtration to occur at the glomerulus;
ii.The glomeruli (capillaries) have tiny pores; to facilitate ultra-filtration;
iii.The proximal and distal convoluted tubules have the following adaptations:
-The lumen wall has villi and microvilli; which increase the surface area for reabsorption;
-The tubule is long and highly coiled; to increase surface area and slow down movement of filtrate/ creating more time for efficient reabsorption;
-It is one cell thick/has thin epitheliu; to reduce the distance travelled by substances hence faster reabsorption of materials;
-The tubule is well vascularized/ well supplied with blood capillaries; for transportation of reabsorbed materials/ create a steep concentration gradient for efficient transport of reabsorbed materials;
-The cells lining the tubule have numerous mitochondria; which provide energy for active transport/ reabsorption of substances;
iv.The Loop of Henle has the following adaptations:
-It is long; to increase the surface area for re-absorption of mineral salts and water;
-It has a counter current flow established between the filtrate flow and the large supply of blood in capillaries; to create a large/steep diffusion gradient for efficient re-absorption;