Question

The abdominal passage, which connects the abdominal cavity with the scrotal sac in mammals is known as
A. Spermatic canal
B. Neurenteric canal
C. Inguinal canal
D. Haversian canal

Answer 1

Scrotum is the sac-like structure in the animals which contains testes. It is present outside the body. During the development, the testes descend from the abdomen and reach the scrotum through a specialised canal. This canal is supplied with nerves.

Complete answer:
At the time of the development, the testes lie at the lumbar region. It descends after birth and reaches the scrotum which is a hanging structure outside the body. The testis resides in the scrotum which protects the testis by providing it lower temperature than the body.
This movement from the abdominal area to the scrotum is brought about through a channel called the inguinal canal. It is richly supplied with spermatic cord and ilioinguinal nerves. They are two in number. In the case of females, it acts as a channel to convey round ligaments to the uterus.

Spermatic canal- Spermatic cord is the coiled structure in males which is formed by vas deferens. It runs down the inguinal region.
Neurenteric canal- It is a canal which is present in the embryos of many mammals. It helps in maintaining pressure between the amniotic sac and the yolk sac. It closes after the development of notochord.
Haversian canal- It is the canal which is present in the outermost region of bone. The blood vessels and nerves pass through this canal and reach the osteocytes.

Hence the correct answer is option C.

Note –
A disease called the hernia occurs in the inguinal region. It involves the intestine or the abdominal region. It leads to swelling. It is due to the abnormal exit of tissues in the organs.