Describe the Role of the Juxtaglomerular Complex

Functions of Juxtaglomerlar Apparatus JGA. Juxtaglomerular cells JG cells also known as granular cells are cells in the kidney that synthesize store and secrete the enzyme renin.

Microscopic Anatomy Of The Kidney A P 1 2

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. The juxtaglomerular apparatus contains specialised cells of the afferent arteriole known as juxtaglomerular cells. The juxtaglomerular apparatus helps to balance blood pressure. The juxtaglomerular apparatus also known as the juxtaglomerular complex is a structure in the kidney that regulates the function of each nephron the functional units of the kidney.

The role of hormones in renal function. Apparatus apparatuses an arrangement of a number of parts acting together to perform a special function. Its miles discovered between the vascular pole of the renal corpuscle the returning Distal Convoluted Tubule DCT of the equal nephron.

Apah-rattus pl. A a complex type involving distal tubule extraglomerular. The afferent arteriole in this region contains specialised secretory cells smooth muscle cells called juxtaglomerular cells that secrete renin.

The juxtaglomerular equipment is a microscopic structure in the kidney which regulates the characteristic of every nephron. When glomerular blood flow or glomerular blood pressure or glomerular filtration rate decreases it activates juxtaglomerular cells to release renin. The juxtaglomerular complex has an important function in the regulation of rate of filtrate formation and blood pressure the three cell populations of the juxtaglomerular complex.

The juxtaglomerular apparatus functions to maintain blood pressure and to act as a quality control mechanism to ensure proper glomerular flow rate and efficient sodium reabsorption. This structure is located near the glomerulus of the nephron the network of tangled and twisted tubes that act as a filtration system. They are specialized smooth muscle cells mainly in the walls of the afferent arterioles and some in the efferent arterioles.

Identify and describe the two major components of the juxtaglomerular complex and state their role in glomerular filtration. The juxtaglomerular apparatus is named because it is next to the glomerulus. Identify and recognize the histological structure of the kidney and transitional epithelium in an image or microscopically.

The juxtaglomerular apparatus JGA consisting of an asymmetrical cuff of large granular cells in the wall of the afferent arteriole near its entry into the capsule of the nephron contains renin in the granules in the cells. Juxtaglomerular cells granular cells The cells of the afferent artery at the juxtaglomerular apparatus. They monitor the concentration of sodium and chloride ions in the filtrate of the macula densa.

The urethra extends from the bladder to the surface of the body. The juxtaglomerular apparatus is part of the kidney nephron next to the glomerulus. How Does Juxtaglomerular Apparatus Regulate The Kidney Function.

They are baroreceptors that secrete renin upon sensing a decrease in blood pressure. Local transmission of Tubuloglomerular Feedback TGF at its own nephron via angiotensin II AT II Systemic production of Angiotensin II AT II as part of Renin-Angiotensin-Aldosterone System RAAS. The juxtaglomerular apparatus located in the glomerular hilum consists of a vascular component afferent and efferent arterioles and extraglomerular mesangium and a tubular component macula densa.

View the full answer. Renin is a true internal secretion of the kidney. Describe the role of the juxtaglomerular complex 13.

The macula densa a part of the distal convoluted tubule of the same nephron. The juxtaglomerular apparatus is a specialized structure formed by the distal convoluted tubule and the glomerular afferent arteriole. Juxtaglomerular apparatus plays a crucial role within the renin-angiotensin mechanism.

Experts are tested by Chegg as specialists in their subject area. Renin acts on angiotensinogen which is made in the liver and converts it to angiotensin I. The juxtaglomerular apparatus functions to maintain blood pressure and to act as a quality control mechanism to ensure proper glomerular flow rate and efficient sodium reabsorption.

Glomerular capsule parietal layer e. Ascending limb of the nephron loop f. Its main function is to regulate blood pressure and the filtration rate of the glomerulus.

They monitor blood pressure by measuring how much the arteriole wall is stretched. We review their content and use your feedback to keep the quality high. Renin secreted by a part of the juxtaglomerular complex is produced by the granular cells of the afferent and efferent arterioles.

Golgi apparatus see golgi apparatus. Juxtaglomerular granular cells the source of renin are present throughout the vascular component but are more numerous in the afferent arteriole. These cells do two things.

Juxtaglomerular apparatus a collective term for the juxtaglomerular cells in a nephron. Two types of contact between vascular and tubular components are observed. Lacrimal apparatus see lacrimal apparatus.

It is located near the vascular pole of the glomerulus and its main function is to regulate blood pressure and the filtration rate of the glomerulus. The juxtaglomerular apparatus is a specialized structure formed by the distal convoluted tubule and the glomerular afferent arteriole. The juxtaglomerular equipment is called for its proximity to the glomerulus.

It consists of an epithelium-lined lumen and a smooth muscle layer. It is found between the vascular pole of the renal corpuscle and the returning DCT of the same nephron. Label the drawing of the nephron using the key letters of the correct terms Key a.

In this animated and interactive object learners examine the location structure and function of the juxtaglomerular JG apparatusThanks for viewing this. Describe the role of the juxtaglomerular complex. Juxtaglomerular cells also known as granular cells which secrete renin.

The macula densa is a collection of specialized epithelial cells. Thus the kidneys control blood pressure and volume directly. Viewed under magnification the tiny apparatus can be seen surrounding the afferent arteriole the tube that brings fresh blood into the kidney for filtration.

These cells contain the enzyme renin that can sense blood pressure. The juxtaglomerular apparatus consists of three types of cells. They can be considered as myoendocrine cells since they contain myofibrils and attachment bodies together with secretory granules and crystalline protogranules.

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