1. Renal Physiology

Renin is secreted by

• Macula Densa cells

• Juxta Glomerular cells

• Lacis cells

• Mesangial cells

Which of the following is the diluting segment of the kidney?

• A

• B

• C

• All of the above

Renal autoregulation of blood flow & GFR require

• Autonomic innervation

• Aldosterone

• ADH

• No action of extrarenal factors

Which part of the nephron is impermeable to water?

• Proximal Convoluted Tubule

• Distal Convoluted Tubule

• Ascending limb of Loop of Henle

• Descending Limb of Henle

Which statement is NOT true regarding renal circulation?

• It is a portal system which is arterial in nature

• Pressure in glomerular capillaries is very high compared to systemic capillaries

• Glomerular capillaries have less permeability

• Capable of Autoregulation

Which of the following is not a function of kidney?

• Regulation of erythropoiesis

• Control of plasma osmolality

• Gluconeogenesis

• Metabolism of fat

Cells in which part of the nephron have maximum number of mitochondria

• PCT

• DCT

• LOH

• Collecting duct

Macula densa in kidney is located in

• PCT

• DCT

• Afferent aretriole

• Efferent arteriole

Which among the following cells secrete acid?

• Principal(P) cells

• Intercalated(I) cells

• JG Cells

• Mesangial cells

Which of the following is a renal vasodilator?

• Epinephrine

• Dopamine

• Endothelin

• ADH