write name of coiled structure produce by afferent and efferent arterioles and write one function of it.
Answers
Answer:The diagram depicts a nephron of mammalian kidney. Each kidney has more than 1 million functional units called nephrons. A nephron consists of a cup-like Bowman's capsule connected to a long, partially coiled renal tubule. Positioned within Bowman's capsule is a cluster of capillaries called a glomerulus. Three main regions of the renal tubule are the proximal convoluted tubule (or simply, proximal tubule) (Label B), which conducts the filtrate from Bowman's capsule to the loop of Henle (Label C), an elongated, hairpin-shaped portion; and the distal convoluted tubule (or distal tubule) (Label D), which conducts the filtrate to a collecting duct (Label F). Thus, filtrate passes through the following structures: Bowman's capsule --> proximal convoluted tubule --> loop of Henle--> distal convoluted tubule--> collecting duct.
Blood is delivered to the kidney by the renal artery. Small branches of the renal artery give rise to afferent arterioles (afferent means to carry toward) (Label A). An afferent arteriole conducts blood into the capillaries that make up each glomerulus. As blood flows through the glomerulus, some of the plasma is forced into Bowman's capsule. In a typical circulatory route, capillaries deliver blood into veins. Circulation in the kidneys is an exception because blood flowing from the glomerular capillaries next passes into an efferent arteriole. Each efferent arteriole conducts blood away from a glomerulus. The efferent arteriole delivers blood to a second capillary network, the peritubular capillaries (Label E) surrounding the renal tubule. Blood is filtered as it flows through the first set of capillaries, those of the glomerulus. The peritubular capillaries receive materials returned to the blood by the renal tubule. Blood from the peritubular capillaries enters small veins that eventually lead to the renal vein. Thus blood circulates through the kidney in the following sequence: Renal artery--> afferent arterioles--> capillaries of glomerulus-->efferent arterioles-->peritubular capillaries -->small veins--> renal vein.
Explanation:
Answer:
Villi is coiled structure produce by afferent and efferent arterioles.
The villi increase the surface area for absorption.
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