Question

what is our tear salty​

Answer 1

salinity of tears along with the presence of enzymes like lysozyme is responsible for their antimicrobial activity. Basal tears have a salt content similar to blood plasma. The salinity of basal tears disturbs the osmotic balance of bacteria and keeps the cornea in a healthy microbial-free environment. The mineral content of tears also nourishes the tissues associated with eyes. Saline nature of tears also indicates our evolutionary descent from marine organisms.

Answer 2

Salt can be found in every cell in our bodies. In an adult human there is a total of about 250 grammes (a cupful). Is it any wonder our tears and sweat are salty.

So that our bodies can function properly, salt is essential.

Exercise, in hot weather etc, we sweat and this depletes the body of salt, which must then be replaced. Most crucially, salt helps keep the balance of our bodily fluids, that carry nutrients and oxygen around our bodies.