Reabsorption of glucose from glomerular filtrate occurs in
(a) Collecting tube
(b) Loop of Henle
(c) Proximal convoluted tubule
(d) Distal convoluted tubule

Options

A. Collecting tube
B. Loop of Henle
C. Proximal convoluted tubule
D. Distal convoluted tubule

Answer

To solve the question regarding the reabsorption of glucose from glomerular filtrate, we can follow these steps:

### Step 1: Understand the process of reabsorption
Reabsorption is the process by which substances in the glomerular filtrate are reabsorbed back into the bloodstream. Glucose is one of the essential substances that the body needs to retain.

**Hint:** Think about what substances the body needs to keep and how they are reabsorbed.

### Step 2: Identify where glucose reabsorption occurs
Glucose is primarily reabsorbed in the nephron of the kidney. The nephron consists of several parts, including the proximal convoluted tubule (PCT), loop of Henle, distal convoluted tubule (DCT), and collecting duct.

**Hint:** Recall the structure of the nephron and the functions of its different parts.

### Step 3: Focus on the proximal convoluted tubule (PCT)
The PCT is lined with simple cuboidal epithelium and is equipped with brush border cells that increase the surface area for absorption. It is here that glucose is reabsorbed almost completely from the filtrate.

**Hint:** Remember the specific features of the PCT that facilitate absorption.

### Step 4: Mechanism of glucose reabsorption
Glucose reabsorption in the PCT occurs through a symporter known as the sodium-glucose symporter. This mechanism utilizes active transport, which requires energy. The energy is derived from the transport of sodium ions, which helps in pulling glucose back into the bloodstream.

**Hint:** Consider how active transport works and the role of sodium in this process.

### Step 5: Conclusion
Based on the information gathered, we can conclude that the reabsorption of glucose from glomerular filtrate occurs primarily in the proximal convoluted tubule (PCT).

**Final Answer:** (c) Proximal convoluted tubule