Question

The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and small bronchi are known as (a) squamous epithelium (b) columnar epithelium (c) ciliated epithelium (d) cubical epithelium.

Short answer

The epithelial cells lining the inner surface of Fallopian tubes, bronchioles and small bronchi are known as ciliated epithelium.

Step-by-step solution

Understanding the Function of Epithelial Cells in Various Organs

Epithelial cells come in various shapes and have different functions depending on their location. In certain areas of the body, like the Fallopian tubes and parts of the respiratory system (bronchioles and small bronchi), epithelial cells have the specific job of moving fluids or other materials across their surface. This movement is often facilitated by tiny hair-like structures called cilia.

Identifying the Correct Type of Epithelial Tissue

The inner surfaces of the Fallopian tubes, bronchioles, and small bronchi require the movement of mucus and other substances. This function requires the presence of cilia on the cell surfaces. The cells with cilia that aid in the movement are known as ciliated epithelial cells.

Selecting the Correct Answer

Based on the function and location of the cells in the Fallopian tubes, bronchioles, and small bronchi, and their characteristic feature of having cilia, the correct type of epithelial cells is identified as ciliated epithelium.

Key concepts

Epithelial Cells

Epithelial cells are a group of cells that form the epithelium, a type of tissue that lines cavities and surfaces of structures throughout the body. They serve as a protective barrier, regulate substance exchange, and are responsible for secretion and absorption. Depending on their function and location, epithelial cells appear in various shapes such as squamous (flat), columnar (tall and cylindrical), cuboidal (cube-like), and ciliated (with cilia).
Ciliated epithelial cells are unique due to the cilia on their surface. These tiny, hair-like structures can beat in a coordinated fashion, moving substances across the cell surface. This is crucial in areas like the Fallopian tubes and parts of the respiratory system, where the transport of fluids, mucus, or other materials is necessary for normal functioning. Understanding the role and characteristics of ciliated epithelial cells can be key in studying bodily functions and diagnosing various diseases.

Fallopian Tubes

The Fallopian tubes, also known as oviducts or uterine tubes, are an essential part of the female reproductive system. These slender tubes connect the ovaries to the uterus and play a pivotal role in the process of reproduction. After ovulation, the Fallopian tubes facilitate the passage of the egg from the ovary to the uterus. It's within these tubes that fertilization by sperm often occurs.
The inner surface of the Fallopian tubes is lined with ciliated epithelial cells. The cilia beat in a synchronized rhythm, gently propelling the egg towards the uterus. This movement is essential for successful conception, and any disruption in cilia function may lead to infertility or ectopic pregnancy. Therefore, the understanding of epithelial cell functionality in Fallopian tubes is not only vital for comprehending reproductive biology but also for recognizing and treating fertility-related issues.

Respiratory System Anatomy

The respiratory system includes a complex network of organs and tissues that help in breathing. Major components include the nasal passages, pharynx, larynx, trachea, bronchi, bronchioles, and lungs. Its primary function is to supply oxygen to the body and remove carbon dioxide.
The internal surfaces of the bronchioles and small bronchi within this system are lined with ciliated epithelial cells. These cilia play a critical role in keeping the airways clear of mucus and debris by moving the mucous layer upwards towards the throat where it can be swallowed or expelled. This process is known as the mucociliary escalator and is a key defense mechanism against respiratory infections. In-depth knowledge of this aspect of respiratory system anatomy can aid in understanding how the body fights against airborne diseases and the implications of conditions like asthma or chronic bronchitis.