Pathology MCQ Answer 56

The correct answer is B.

The border modification consists of cilia on the surface of pseudostratified columnar epithelium. Cilia are shorter than stereocilia and usually appear bent or wavy in sections. Kartagener's syndrome is one type of immotile cilia syndrome in which the dynein arms of microtubules are missing or defective. Thus, cilia cannot move properly and all functions associated with them are affected (mucous sweeping or ciliary elevator functioning, sperm motility, embryonic cell movement, etc.). The result is infertility, situs inversus, bronchiectasis and/or sinusitis.
Implantation (choice A) is not affected in patients with Kartagener's syndrome.

The fertilized ovum can still reach the endometrium and implantation can occur. Also, this is not a section of the uterine tube; the uterine tube has a simple columnar epithelium with peg cells (secretory) and ciliated cells.

The border modification consists of cilia, not microvilli and the specimen is not a section of the intestine, therefore malabsorption (choice C) is incorrect.

Both the small and large intestine have a simple columnar epithelium with microvilli. Microvilli are upright and irregular and resemble a "flat top" haircut across the top of cells.

Disaccharidases (choice D) are present in the cell membrane of microvilli. Deficiencies in digestion occur with the loss of microvilli.

Category: Pathology MCQs