The countercurrent multiplier system in the Loop of Henle is crucial for establishing the medullary osmotic gradient. Which of the following is NOT a key component or characteristic of this system?
Active transport of out of the thick ascending limb
Impermeability of the ascending limb to water
Countercurrent flow of tubular fluid
Active transport of water from the ascending limb to the interstitium
Related Questions
The majority of reabsorption of water, glucose, and amino acids occurs in which part of the nephron?
Glomerulus
Proximal convoluted tubule (PCT)
Loop of Henle
Distal convoluted tubule (DCT)
Glucose is typically completely reabsorbed in the:
Proximal convoluted tubule
Loop of Henle
Distal convoluted tubule
Collecting duct
Choose the false statement
Tubular cells secretes , and Ammonia to filtrate
Tubular cells helps to maintain the acid base balance of the body fluid
Tubular cells helps in ionic balance
Tubular secretion is not very important step in urine formation
Which combination of changes would MOST effectively increase the Glomerular Filtration Rate (GFR)?
Decreased glomerular capillary hydrostatic pressure and increased Bowman's capsule hydrostatic pressure
Increased glomerular capillary hydrostatic pressure and increased Bowman's capsule hydrostatic pressure
Decreased glomerular capillary hydrostatic pressure and decreased Bowman's capsule hydrostatic pressure
Increased glomerular capillary hydrostatic pressure and decreased Bowman's capsule hydrostatic pressure
Choose the correct ones: I. Vasa recta is lacking in cortical nephrons, II. Maximum number of nephrons in kidney are juxta-medullary type, III. DCT of many nephorns open into collecting tubule, IV. During summer when body loses lot of water by evaporation, the release of ADH is suppressed, V. When someone drinks lot of water, ADH release is suppressed, VI. Exposure to cold temperature stimulates ADH release, VII. An increase in glomerular blood flow stimulates formation of angiotensin II. The correct option is
I, II, III
III, V, VI
IV, V, VI
II, IV, VII
Identify the true statements and choose the correct option accordingly
I. Blood vessel leading to the glomerulus is called efferent arteriole
II. Vasa-recta, peritubular capillaries and glomerulus, all have blood
III. Cortical nephrons have highly reduced vasa-recta
IV. Vasa-recta runs parallel to the Henleโs loop in the juaxta-medullary nephron
I, II and III
I, II and IV
I, III and IV
II, III and IV
A patient presents with significantly reduced Glomerular Filtration Rate (GFR) but normal plasma protein levels. Which of the following is the LEAST likely cause of this condition?
Constriction of the afferent arteriole
Acute kidney injury affecting glomerular capillaries
Urinary tract obstruction
Severe liver disease
The size of filtration slits of glomerulus is
10 nm
15 nm
20 nm
25 nm
Glomerulus is a tuft of capillaries formed by โฆAโฆ (A fine branch of renal artery). Blood from the glomerulus is carried away by an โฆBโฆ
Select the correct option for A and B to complete the given NCERT statement
Afferent arteriole; Efferent arteriole
Efferent arteriole; Afferent arteriole
Renal vein; Renal artery
Renal artery; Renal vein
Choose the correct ones
I. Afferent arteriole carries the blood away from the glomerulus toward renal vein
II. Efferent arteriole carries the blood to glomerulus
III. Podocytes form minute spaces (slit pores) for the filtration of blood into the Bowmanโs capsule
IV. In Henleโs loop There are most reabsorption of the major substances from the glomerular filtrate
V. Distal convoluted tubule reabsorption K^+ ions into the surrounding blood capillaries
The correct option is
I and II only
III only
III and IV only
I, II, and V only
