what is the end-product of protein metabolism that is excreted in urine course hero

About 80% of urinary nitrogen is in the form of urea which is the major end product of protein metabolism. Urea excreted in the urine is the primary method of nitrogen elimination.

Full Answer

What hormone controls the concentration of urine in the endocrine system?

Antidiuretic hormone controls final urine concentration. It is secreted from the posterior pituitary and increases water permeability in the last segment of the distal tubule.

When the bladder accumulates 250 to 300 ml of urine?

When the bladder accumulates 250 to 300 ml of urine, it contracts and the internal urethral sphincter relaxes through activation of the spinal reflex arc (known as the micturition reflex). What is the trigone? a. A smooth muscle that comprises the orifice of the ureter b. The inner mucosal lining of the kidneys c.

What is the function of Urodilatin Quizlet?

Urodilatin inhibits sodium chloride and water reabsorption in the medullary part of the collecting duct. b. It inhibits antidiuretic hormone (ADH) to prevent water reabsorption in the medullary part of the collecting duct.

Where is erythropoietin produced in the kidney?

Erythropoietin is produced by the fetal liver and in the adult kidney and is essential for normal erythropoiesis. What provides the best estimate of the functioning of renal tissue?

Which hormone controls the final urine concentration?

Urea. Antidiuretic hormone controls final urine concentration. It is secreted from the posterior pituitary and increases water permeability in the last segment of the distal tubule. Renin stimulates the renin-angiotensin-aldosterone system, which can increase systemic arterial pressure and change renal blood flow.

Which organ secretes renin and erythropoietin?

A, B, C. The kidney also has an endocrine function, secreting the hormones renin, erythropoietin, and 1,25-dihydroxyvitamin D3 for the regulation of blood pressure, erythrocyte. production, and calcium metabolism, respectively.

What is the process of reabsorption of fluids and solutes from the tubular lumen to the

Tubular reabsorption is the movement of fluids and solute from the tubular lumen to the peritubular capillary plasma. Ultrafiltration is the process of filtration across the glomerular capillaries to form a filtrate of protein-free plasma.

What is the effect of ANP and BNP on the kidneys?

When the heart dilates during volume expansion or heart failure, ANP and BNP inhibit sodium and water absorption by kidney tubules, inhibit the secretion of renin and aldosterone, vasodilate the afferent arterioles, and constrict the efferent arterioles.

What are the three types of nephrons?

Superficial. Nephrons are the functional units of the kidney. The three types include superficial, midcortical, and juxtamedullary. The superficial cortical nephrons constitute approximately 85% of all nephrons. The area of the kidneys that contains the glomeruli and portions of the tubules is called the: a.

When is renin released?

Primarily, renin is released when a person experiences hypotension, which starts a cascade of events that leads to the release of the angiotensins. The movement of fluids and solute from the tubular lumen to the peritubular capillary plasma is called: Ultrafiltration. Tubular reabsorption .

What is the surface of the nephron covered with microvilli?

The only surface inside the nephron where the cells are covered with microvilli (a brush border) is called the proximal convoluted tubules. This proximal convoluted tubular lumen consists of one layer of cuboidal cells with a surface layer of microvilli that increases the reabsorptive surface area.