The cluster of cells responsible for secreting milk is present in the

Options

A. mammary lobes
B. mammary duct
C. mammary ampulla
D. mammary tubules

Answer

To solve the question regarding the cluster of cells responsible for secreting milk, we can follow these steps:

### Step 1: Identify the Structure Involved
The question asks about the cluster of cells that secrete milk. In mammals, this function is primarily carried out by the mammary glands.

**Hint:** Think about the anatomical structures in the breast that are involved in milk production.

### Step 2: Understand the Anatomy of the Mammary Glands
The mammary glands consist of several lobes, typically around 15 to 20 in number. Each lobe contains smaller structures called alveoli, which are the actual milk-secreting cells.

**Hint:** Recall the organization of the mammary glands and how they are structured to facilitate milk production.

### Step 3: Recognize the Role of Alveoli
The alveoli are small sac-like structures within the mammary lobes. These are the cells responsible for producing and secreting milk.

**Hint:** Focus on the specific cells that perform the function of milk secretion.

### Step 4: Trace the Pathway of Milk
Once milk is produced in the alveoli, it travels through a series of ducts. The milk moves from the alveoli to the mammary ducts, then to the ampulla, and finally to the lactiferous ducts, which open at the nipple.

**Hint:** Consider how the milk flows from the site of production to its exit point.

### Step 5: Conclude the Answer
Based on the information gathered, the cluster of cells responsible for secreting milk is found in the mammary lobes, specifically in the alveoli.

**Final Answer:** The cluster of cells responsible for secreting milk is present in the **mammary lobes**.

### Summary of Steps:
1. Identify the structure involved (mammary glands).
2. Understand the anatomy (mammary lobes).
3. Recognize the role of alveoli (milk secretion).
4. Trace the pathway of milk (from alveoli to nipple).
5. Conclude the answer (mammary lobes).