JGA is a special sensitive region formed by cellular modifications in the:
1. DCT and the afferent arteriole at the location of their contact
2. DCT and the efferent arteriole at the location of their contact
3. PCT and the afferent arteriole at the location of their contact
4. PCT and the efferent arteriole at the location of their contact

Subtopic:  Autoregulation of GFR |
 77%
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An excessive loss of body fluid can:
1. activate osmoreceptors, stimulating hypothalamus to release ADH and thereby preventing diuresis
2. switch off osmoreceptors, suppressing release of ADH promoting diuresis
3. activate osmoreceptors, stimulating hypothalamus to release ADH and thereby promoting diuresis
4. switch off osmoreceptors, suppressing release of ADH preventing diuresis

Subtopic:  Autoregulation of GFR |
 86%
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A hormone formed in the blood that causes vasoconstriction is:

1. Renin 2. Aldosterone
3. Angiotensin 4. Vasopressin
Subtopic:  Autoregulation of GFR |
 51%
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The hormone produced by the adrenal cortex, when stimulated by angiotensin II, that causes increased sodium and water reabsorption in the distal convoluted tubules, is:

1. renin 2. aldosterone
3. antidiuretic hormone 4. cortisol
Subtopic:  Autoregulation of GFR |
 80%
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Which area actually secretes renin into the blood?

1. macula densa 2. juxtaglomerular apparatus
3. juxtaglomerular cells 4. cortical nephron
Subtopic:  Autoregulation of GFR |
 66%
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Identify the incorrect statement regarding GFR:
1. The GFR averages approximately 180 L per day (about 125 ml/min).
2. The GFR increases during sympathetic stimulation due to the vasodilation of afferent arterioles.
3. A decrease in GFR results in a decrease in the total urine output.
4. Renal auto-regulation maintains the GFR at a relatively constant rate normally.

Subtopic:  Autoregulation of GFR |
 59%

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