The second part is called the loop of Henle , or nephritic loop, because it forms a loop with descending and ascending limbs that goes through the renal medulla. The third part of the renal tubule is called the distal convoluted tubule DCT and this part is also restricted to the renal cortex. The DCT, which is the last part of the nephron, connects and empties its contents into collecting ducts that line the medullary pyramids.
The collecting ducts amass contents from multiple nephrons and fuse together as they enter the papillae of the renal medulla. The capillary network that originates from the renal arteries supplies the nephron with blood that needs to be filtered. The branch that enters the glomerulus is called the afferent arteriole. The branch that exits the glomerulus is called the efferent arteriole. Within the glomerulus, the network of capillaries is called the glomerular capillary bed.
Once the efferent arteriole exits the glomerulus, it forms the peritubular capillary network , which surrounds and interacts with parts of the renal tubule. In juxtamedullary nephrons, the peritubular capillary network forms a network around the loop of Henle and is called the vasa recta. Improve this page Learn More. Skip to main content. Module The Excretory System. Search for:. Kidney Structure Learning Outcomes Describe the structure of the kidneys and the functions of the parts of the kidney.
Practice Question Which of the following statements about the kidney is false? The renal pelvis drains into the ureter. The renal pyramids are in the medulla. A cross-section of an adult kidney from the University of Utah Spencer S. Eccles Health Sciences Library. Study: Brain structure of kidney donors may make them more altruistic from Georgetown University. Urinary System Structures. The Three Steps of Urine Formation.
Urine Storage and Elimination. Common Diseases and Disorders. When you select "Subscribe" you will start receiving our email newsletter. Use the links at the bottom of any email to manage the type of emails you receive or to unsubscribe.
See our privacy policy for additional details. Renal pyramids in the news. Be alerted to news on Renal pyramids. News trends on Renal pyramids. Blogs on Renal pyramids. Definitions of Renal pyramids. Patient resources on Renal pyramids. Discussion groups on Renal pyramids. Patient Handouts on Renal pyramids. Directions to Hospitals Treating Renal pyramids. Risk calculators and risk factors for Renal pyramids. Symptoms of Renal pyramids.
Diagnostic studies for Renal pyramids. Another term for renal pyramids is malpighian pyramids. Between seven and eighteen pyramids exist in the innermost part of the kidney, which is called the renal medulla ; in humans, there are usually only seven of the pyramids. The base of each pyramid faces the outer portion of the kidney, which is called the renal cortex. The renal cortex is located between the renal medulla and the renal capsule.
The renal capsule is defined as the layer that surrounds the kidneys with tough fibrous tissue. The capsule is covered in a connective fatty tissue. Renal pyramids appear as though they are striped because they are situated in segments of parallel nephrons. The nephron is the basic functional and structural unit of the kidney that filters the blood that regulates water concentration and soluble substances such as sodium salts.
After filtering, what is needed is reabsorbed and the rest is excreted as waste or urine. Once the waste is eliminated, the blood pressure and volume are regulated. The kidneys are some of the most important organs in your body, and each one contains many parts.
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