The cells that lines the ducts of mammary glands are

Options

A. Stratified columnar epithelium
B. Stratified cuboidal epithelium
C. Transitional epithelium
D. Squamous epithelium

Answer

To solve the question "The cells that line the ducts of mammary glands are", we can follow these steps:

### Step 1: Understand the Structure of Mammary Glands
Mammary glands are specialized organs found in female mammals that produce milk. They are classified as exocrine glands and are essentially modified sweat glands.

**Hint:** Remember that mammary glands are primarily responsible for milk production and are unique to mammals.

### Step 2: Identify the Type of Epithelium
The ducts of mammary glands are lined with a specific type of epithelial tissue. The question asks for the type of cells that line these ducts.

**Hint:** Think about the characteristics of epithelial tissues and their classifications, especially in terms of layers and cell shapes.

### Step 3: Differentiate Between Types of Epithelial Tissue
There are various types of epithelial tissues, including stratified columnar and stratified cuboidal epithelium. It is important to distinguish between these two as they can often be confused.

**Hint:** Focus on the word "stratified" which indicates multiple layers, and consider the shape of the cells (cuboidal vs. columnar).

### Step 4: Identify the Correct Epithelial Type
The ducts of mammary glands are specifically lined with stratified cuboidal epithelium. This type consists of multiple layers of cube-shaped cells, which is crucial for the function of the ducts.

**Hint:** Recall that stratified cuboidal epithelium is typically found in glandular ducts and is important for secretion.

### Step 5: Conclusion
Based on the information gathered, the cells that line the ducts of mammary glands are stratified cuboidal epithelium.

**Final Answer:** Stratified cuboidal epithelium.