Match the nephron structure to the characteristics
-diameter controlled to regulate GFR
A)afferent arteriole
B)glomerulus
C)efferent arteriole
D)Bowman's capsule
E)proximal tubule
F)descending limb of loop of Henle
G)ascending limb of loop of Henle
H)distal tubule
I)collecting duct

Question

Quizplus · Accepted Answer

The diameter of the afferent arteriole is actively regulated to control the glomerular filtration rate (GFR).

Answer: B
 The glomerulus is where filtration occurs, as blood pressure forces fluid and solutes out of the capillaries and into the Bowman's capsule.

Answer: C
 The efferent arteriole carries blood away from the glomerulus, and its diameter also affects the GFR.

Answer: D
 The Bowman's capsule surrounds the glomerulus and collects the filtered fluid (filtrate).

Answer: E
 The proximal tubule reabsorbs the majority of filtered water and small solutes and actively secretes some substances into the tubule.

Answer: F
 The descending limb of the loop of Henle mainly conducts water reabsorption from the tubule.

Answer: G
 The ascending limb of the loop of Henle is responsible for reabsorbing sodium and other ions from the tubule.

Answer: H
 The distal tubule performs additional reabsorption and selective secretion of solutes, contributing to the final composition of urine.

Answer: I
 The collecting duct receives urine from multiple nephrons and is responsible for fine-tuning the urine composition, as well as regulating water balance in the body.

Match the Nephron Structure to the Characteristics