Question

A disease that destroys the dorsal horn cells of the spinal cord is
A.Polio
B.Malaria
C.Filaria
D.Arthritis

Answer 1

Hint: Dorsal Horn is the part of the spinal cord that receives information from the body and then transmits it to the brain through the ascending pathway and the dorsal horn is also known as the posterior horn of the spinal cord.

Complete answer:
1.Poliomyelitis also known as polio is caused by poliovirus belonging to the picornaviridae family and genus Enterovirus.
2.Mostly the poliovirus affects the gut of the infected person but in some rare cases, the poliovirus can also affect the brain and the spinal cord.
3.The poliovirus causes weakness and paralysis of muscles and the other symptoms of poliomyelitis are fever, abdominal pain, nausea, constipation, etc.
4.When polio infects the spinal cord and spinal neurons it is known as spinal polio which can cause paralysis of the lower limbs and affect the dorsal horn of the spinal cord which fails in transmission of somatosensory information to the brain.

Option A: Poliovirus can affect the spinal cord and can destroy the dorsal horn of the spinal cord. Therefore, this is the correct option.

All other options are irrelevant.

Hence, the correct answer is option (A)

Note: Polio is an infectious disease and is mostly asymptomatic and can spread through infected food and water as it is highly contagious and it can be prevented with polio vaccine which contains antibodies and prevents the replication of poliovirus, Apart from medicines and vaccines there is no specific cure for polio.