What makes up renal corpuscle

The ureter is a muscular tube, composed of an inner longitudinal layer and an outer circular layer. The lumen of the ureter is covered by transitional epithelium also called urothelium. Recall from the Laboratory on Epithelia that the transitional epithelium is unique to the conducting passages of the urinary system. Its ability to stretch allows the dilation of the conducting passages when necessary.

The ureter connects the kidney and the urinary bladder. The ureter empties the urine into the bladder. The transitional epithelium continues over the surface of this organ. The thickened muscular layers become interwoven and cannot be clearly identified at this point.

The urethra carries the urine away from the bladder to the outside of the body. In the male, it is joined by the genital system. The epithelium changes from transitional to stratified or pseudostratified columnar in the urethra, and to stratified squamous in the distal end of the urethra. Answer: Podocyte: Foot processes assist in filtration barrier function by repelling negatively-charged molecules.

Mesangial Cell: Provides structure support and regulate diameter of capillaries. Macula Densa: Senses blood pressure, regulates blood flow in afferent arteriole to maintain the glomerular filtration rate and stimulates release of renin.

Juxtaglomerular Complex: synthesize, store and release renin. Answer: The ureter and bladder have a transitional epithelium. The initial segment of the urethra has a stratified epithelium, and the final segment has a stratified squamous epithelium. Slides Please select whether to view the slides in study mode or quiz mode. In study mode, the images will contain labels and a description.

In quiz mode, labels and description will be hidden. Study Mode. Virtual Microscope Slides Kidney Begin by identifying roughly where the renal cortex and renal medulla are located. A filtration membrane is formed by the fused basement membranes of the podocytes and the capillary endothelial cells that they embrace.

Contractile mesangial cells further perform a role in regulating the rate at which the blood is filtered. Specialized cells in the JGA produce paracrine signals to regulate blood flow and filtration rates of the glomerulus.

Other JGA cells produce the enzyme renin, which plays a central role in blood pressure regulation. The filtrate enters the PCT where absorption and secretion of several substances occur. The descending and ascending limbs of the loop of Henle consist of thick and thin segments.

Each collecting duct collects forming urine from several nephrons and functions to fine tune water recovery. Skip to content Learning Objectives By the end of this section, you will be able to: Distinguish the histological differences between the renal cortex and medulla Describe the structure of the filtration membrane Identify the major structures and subdivisions of the renal corpuscles, renal tubules, and renal capillaries Discuss the function of the peritubular capillaries and vasa recta Describe the structure and function of the juxtaglomerular apparatus Describe the histology and functional significance of the proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting ducts.

External Website Visit this link to view an interactive tutorial of the flow of blood through the kidney. Review Questions. Critical Thinking Questions 1. Which structures make up the renal corpuscle? What are the major structures comprising the filtration membrane?

The major structures comprising the filtration membrane are fenestrations and podocyte fenestra, fused basement membrane, and filtration slits.

Previous: Next: This diagram shows how blood passes out from the fenestrated capillary through the basement membrane into the podocyte, through the feet. These 'feet' interdigitate with those from other podocytes, to form filtration slits that are only 20 to 30 nm wide. Urinary: Renal Corpuscle This schematic diagram shows the major features of the renal corpuscle. Molecules from blood plasma must pass through the fenestrated capillary epithelium fenestrations are nm in diameter pass through the thick basement membrane main filtration barrier pass though filtration slits between the podocyte feet.

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. The cortex covers the capsule. Nephrons are in the renal cortex. Show Answer Statement c is false. Practice Question Which of the following statements about the nephron is false? The collecting duct empties into the distal convoluted tubule. The loop of Henle is between the proximal and distal convoluted tubules.