But luckily, we’ve been able to go through
the constituents of salivary secretions.
We know how salivary glands work, how
they’re controlled and regulated.
Remember, this occurs
from both the sympathetic
and the parasympathetic
but the parasympathetic nervous
system is more important
than the sympathetic
in this case.
We also know the constituents
of gastric gland secretions,
and these are things like all the
different ions that we talked about,
things like hydrogen ions, things
like potassium, things like chloride.
We also went through intrinsic factor
and pepsinogen that are also secreted.
Spent the majority of the time though
talking about the control and regulation
of hydrogen ion secretions
from the parietal cells.
And this involves a multiple step process.
Some of them direct, some of them indirect,
but we were able to talk through
talking about acetylcholine
both the ECL cells
and the G cells to secrete
histamine and gastrin.
And all those work together to
stimulate hydrogen ion secretion,
and that’s part of that control and
regulation of hydrogen ion secretion.
Then we are able to finally
talk through the reason
why you can pharmacologically
target some of these receptors
to decrease acid production.