Heart's Tears?

Our Joseph  says,
but not to my surprise,
his heart sheds tears.

I cannot think  he’s right
because as my good doctor and
my textbooks on anatomy
and physiology proclaim
with some authority
this fluid is contained within
and only springs
from glands above one’s eyes.

What’s more
the saline held within
such chambered tears
would damage do
unto a  crying heart’s
two atria and to its ventricles
and cause eventually
congestive strife
or  cardiac arrest
if not one’s death!
.
So once again
old J-Z made a claim
that is nonsensical.