Which of the following components can induce pain during $Inflammation$?

List some names of infectious diseases.

The diseases which occur at irregular intervals and locations are known as

The virus causing conjunctivitis spreads from one person to another through the air. Therefore,conjunctivitis is a:

Define and explain the terms: Non-infectious disease and Infectious disease.

Select the correct option to fill up the blanks.
$(i)$ Diseases which are easily transmitted from one person to another,are called $.....$ diseases.
$(ii)$ In human body,parasite of malaria initially multiplies within the $........$ and then attack the $......$
$(iii) ......$ is the yellowish fluid secreted by mother during the initial days of lactation.
$(iv) ......$ and $.......$ are the primary lymphoid organs.