Lining epithelium of fallopian tube is –
**Core Concept**
The lining epithelium of the fallopian tube plays a crucial role in fertilization and early embryonic development. The type of epithelium lining the fallopian tube is essential for its function in facilitating the transport of the ovum and sperm.
**Why the Correct Answer is Right**
The lining epithelium of the fallopian tube is primarily composed of ciliated columnar epithelial cells. These cells are characterized by the presence of cilia, which beat in a coordinated manner to propel the ovum towards the uterus. The cilia are also involved in the clearance of debris and bacteria from the fallopian tube. The columnar epithelial cells also produce mucins, which help to maintain the fluidity of the tubal environment and facilitate the transport of the ovum.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because the fallopian tube lining does not primarily consist of stratified squamous epithelium, which is typically found in areas exposed to high friction and abrasion, such as the skin and esophagus.
* **Option B:** This option is incorrect because the fallopian tube lining does not primarily consist of simple cuboidal epithelium, which is typically found in areas involved in filtration and absorption, such as the kidneys and intestines.
* **Option C:** This option is incorrect because the fallopian tube lining does not primarily consist of pseudostratified columnar epithelium, which is typically found in areas involved in mucus production and secretion, such as the respiratory tract.
**Clinical Pearl / High-Yield Fact**
The cilia on the lining epithelium of the fallopian tube beat in a coordinated manner to propel the ovum towards the uterus, a process known as tubal motility. This process is essential for fertilization and early embryonic development.
**Correct Answer: C. Ciliated columnar epithelium.**