A and B are peptide hormones , known to counteract each other . Both of them are secreted by different cells of the same leaf-like organ found near thee stomach . If B is used to cure a disease in which glucose is lost via urine and excess A is a potential causes of the same diseases , identify A and B

Options

A. A : insulin , B: glucagon
B. A : Somatostatin, B : insulin
C. A : glucagon, B: insulin
D. A: insulin , B : Somatostatin

Answer

To solve the question, we need to identify the peptide hormones A and B based on the clues provided. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Organ
The question states that both hormones A and B are secreted by different cells of the same leaf-like organ found near the stomach. The only organ that fits this description is the pancreas, which has a leaf-like shape and is located near the stomach.

**Hint:** Think about the organs associated with hormone secretion and their locations in the body.

### Step 2: Understand the Functions of the Hormones
The question mentions that hormone B is used to cure a disease in which glucose is lost via urine, and excess of hormone A is a potential cause of the same disease. This indicates that:
- Hormone B must be involved in lowering blood glucose levels.
- Hormone A must be involved in raising blood glucose levels.

**Hint:** Consider which hormones are known to regulate blood glucose levels.

### Step 3: Identify the Hormones
From our understanding of pancreatic hormones:
- **Insulin** is a hormone that lowers blood glucose levels by facilitating the uptake of glucose into cells.
- **Glucagon** is a hormone that raises blood glucose levels by promoting the release of glucose from the liver.

Given that B is used to cure a disease where glucose is lost via urine (which is characteristic of diabetes), and excess A (glucagon) can lead to increased blood glucose levels, we can conclude:
- A = Glucagon
- B = Insulin

**Hint:** Recall the roles of insulin and glucagon in glucose metabolism.

### Step 4: Confirm the Relationship
Insulin and glucagon are known to counteract each other:
- Insulin decreases blood glucose levels.
- Glucagon increases blood glucose levels.

This confirms our identification of A and B.

**Final Answer:**
- A = Glucagon
- B = Insulin

### Summary of Steps:
1. Identify the organ (Pancreas).
2. Understand the functions of the hormones (Insulin lowers glucose; Glucagon raises glucose).
3. Identify the hormones (A = Glucagon, B = Insulin).
4. Confirm their relationship (counteracting effects).