Major poion of glomerular filtrate is absorbed in ?
**Core Concept**
The **renal physiology** and **nephron function** are crucial in understanding how the body regulates fluid and electrolyte balance. The **glomerular filtrate** is the fluid that passes through the glomeruli of the nephrons in the kidneys. The majority of this filtrate is reabsorbed back into the bloodstream to prevent excessive loss of water and essential nutrients.
**Why the Correct Answer is Right**
The correct answer is related to the part of the nephron where the majority of **glomerular filtrate** reabsorption occurs. This process is essential for maintaining proper fluid balance and preventing dehydration. The **proximal convoluted tubule (PCT)** is the site where the majority of **glomerular filtrate** is reabsorbed, including water, glucose, and amino acids, back into the peritubular capillaries.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not the primary site for the reabsorption of the majority of the glomerular filtrate.
**Option B:** Incorrect as it does not play a significant role in the major reabsorption of glomerular filtrate.
**Option C:** Incorrect because, although some reabsorption occurs here, it is not the major portion.
**Option D:** Incorrect as it is involved in the regulation of water and electrolyte balance but not the major site for glomerular filtrate reabsorption.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that approximately 65-70% of the glomerular filtrate is reabsorbed in the **proximal convoluted tubule (PCT)**, highlighting its crucial role in maintaining fluid and electrolyte balance.
**Correct Answer:** Correct Answer: B. Proximal convoluted tubule.