Question

Vermiform appendix is a part of
A. Alimentary canal
B. Nervous system
C. Vascular system
D. Reproductive system

Answer 1

Hint: The vermiform appendix is a type of muscular structure which is attached to the large intestine in the human body and it is a narrow tube. It is a finger-like structure and blind-ended tube which is connected to the cecum.

Complete answer:
The cecum is a pouch-like structure of the colon which is located at the junction of the small and the large intestines. The appendix is generally located in the lower right portion of the abdomen, near the right hip bone. The human appendix is generally about 9 cm in length but can range from 5 to 35 cm. The diameter of the appendix is 6 mm and more than 6 mm is considered a thickened appendix. The appendix is connected to the continuous set of tissues known as mesentery in the lower region of the ileum, by a short portion of the mesocolon known as the mesoappendix.
The appendix is an important component of the mammalian mucosal immune function, mainly B cell-moderate immune responses and it also produced T cells. This structure helps in the proper movement and removal of waste matter in the digestive system, contains lymphatic vessels which regulate pathogens, and it may even produce early defences which help in the prevention of deadly diseases. It can also give more immune defences by invading pathogens and getting the lymphatic system B and T cells to fight the viruses and bacteria which infect the portion of the bowel.
Hence, the correct answer is ‘A. Alimentary canal’.

Note: The vermiform appendix was regarded as the vestigial organs but due to its several functions it is not a vestigial organ. The vestigial organ is the structures which have no clear function and it appears as the remaining parts from a past ancestor.