23.3: Urine Formation I - Glomerular Filtration (Regulation of Glomerular Filtration)

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Renal autoregulation, sympathetic control, hormonal control

What are the three homeostatic mechanisms that allow the Glomerular Filtration Rate (GFR) to be controlled?

Renal Autoregulation

The ability of the nephrons to adjust their own blood flow and GFR without external (nervous / hormonal) control is called ............... . This enables the nephrons to maintain a stable GFR even when arterial blood pressure changes.

Myogenic mechanism, Tubuloglomerular feedback

What are the two mechanisms of renal autoregulation?

Myogenic Mechanism

Which mechanism of renal autoregulation responds to an INCREASE in BP which causes an increased STRETCH in the afferent arteriole wall, causing smooth muscle contraction, which leads to a decrease in blood flow into the glomerulus, leading to a decrease in GFR?

Tubuloglomerular feedback

What is the Renal Autoregulation mechanism by which the glomerulus receives feedback on the status of the downstream tubular fluid and adjusts filtration to regulate the composition of the fluid, stabilize its own performance, and compensate for fluctuations in blood pressure?

Juxtaglomerular apparatus

A complex of structures located NEXT TO THE GLOMERULUS in the kidney that regulates the function of each nephron:

Macula densa, Juxtaglomerular cells, Mesangial cells

What are the three types of cells associated with Tubuloglomerular Feedback.

Angiotensin II

The secretion of renin promotes the release of what hormone that aids in reducing water loss, encouraging water intake, and constricting blood vessels?

Blood Pressure

The only way to adjust the Glomerular Filtration Rate (GFR) from moment to moment is to change glomerular ________________.

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