Question

Describe the regulation of filtration in the nephron (renal corpuscle) in response to blood pressure, nervous input, hormones, and Tubuloglomerular Feedback. (Be sure to compare activity at the afferent and efferent arterioles.)

Answer 1

The renin angiotensin aldosterone (RAAS) system is the played the most important function within body that essential for regulation of blood pressure and fluid balance.The system is mainly comprised of three hormone, renin, angiotensin II and aldosterone.the kidney itself adjust the constriction and dilation afferent arterioles which counteracts the blood pressure.

neural functions to include receiving,processing and provide the sensory inormation to the brain and spinal cord.

In nephron,the blood filtered by tiny blood vessel of glomeruli

Tubuloglomerular feedback.

tubuloglomerular feedback is an adaptive mechanism that links the glomerular to the concentration of salt in tubule fluid at the mecula densa.

Filtration is fundamental process of urinary system, during filtration, the blood enters the afferent artiriole and flows into glomerulus where, filterable blood components including water,nitrogenous waste, will move towards the inside of glomerulus and non filterable components such as cells and serum albumin will exit via efferent arteriole. The filterable components accumulate in the glomerulus to form glomeluar filtrate.

Normally about 20% of total blood of pumped by heart each minute will enters the kidney to undergo filtration this is filtration fraction.Rest 80% of blood flows through rest of the body to facilitate tissue perfusion and gas exchange.