Problem 35 - Objective Biology for NEET

Question

What kind of tissue is goblet cells? (a) Epithelial tissue (b) Connective tissue (c) Neural tissue (d) All of these

Step-by-Step Solution

Answer

Goblet cells are a type of Epithelial tissue.

Step 1: Identification of the Goblet Cell

Goblet cells are a type of cell found in the mucous membranes of the body that secrete mucus. The name 'goblet' refers to the cell's shape, which resembles a wine goblet when the cell secretes mucus. Goblet cells are found in the respiratory, digestive, and reproductive systems of various organisms including humans.

Step 2: Classification of the Goblet Cell

Now that the characteristics of the goblet cells have been identified, we can classify them among the given options: (a) Epithelial tissue, (b) Connective tissue, or (c) Neural tissue. Epithelial tissue is the one that lines the outer surfaces of organs and blood vessels, as well as the inner surfaces of cavities in many internal organs. Connective tissue is the one that provides support and structure to the body. Neural tissue is found in the nervous system and is composed of neurons. As goblet cells are found lining certain systems of the body and are not involved in supporting structures or the nervous system, they belong to the Epithelial tissue.

Key Concepts

Goblet Cells

Goblet cells are specialized epithelial cells that play a crucial role in maintaining the health of mucous membranes. They derive their name from their distinctive shape, which resembles a goblet or wine glass particularly when filled with mucus. These cells are found scattered among other epithelial cells in the linings of organs that are exposed to the external environment.

Goblet cells primarily focus on mucus secretion. This mucus acts as a protective barrier, trapping dust, microbes, and other particles, preventing them from causing harm to the delicate tissues of the organs. Areas where goblet cells are most commonly found include:

• Respiratory tract
• Digestive tract
• Reproductive system

Understanding the function and distribution of goblet cells is key to recognizing their importance in safeguarding these vital systems from external invaders and irritation.

Mucous Membranes

Mucous membranes are thin layers of tissue that line various cavities in the body and cover internal organs, where they act as a protective interface with the external environment. Characterized by their moist surface, these membranes are continuously kept hydrated by mucus, primarily secreted by goblet cells.

The function of mucous membranes includes:

• Protection against pathogens by trapping particles in mucus
• Preventing tissue desiccation
• Facilitating movement of materials

Mucous membranes cover many structures in the body, each serving an essential protective role. These include the linings of the nasal passages, lungs, gastrointestinal tract, and urogenital tracts. Their ability to secrete mucus is vital to ensuring that the tissues beneath remain hydrated and protected from mechanical or microbial assaults.

Cell Classification

Cell classification is a fundamental aspect of biology that involves grouping cells based on their structure, function, and location within an organism. Understanding how goblet cells fit into this classification system highlights their specialized role.

There are three primary tissue types involved in classification:

• Epithelial Tissue: Forms the covering or lining of all internal and external surfaces of the body. Goblet cells, which secrete mucus, are a type of epithelial cell.
• Connective Tissue: Provides structural support and fills spaces between tissues and organs.
• Neural Tissue: Comprises the central and peripheral nervous systems, specialized for communication via electrical signals.

In the context of goblet cells, they belong to the epithelial classification, specifically being involved in lining the organ systems and performing a secretory function. This classification aligns with their role in covering and protecting internal structures by producing mucus.