The submandibular gland [Glandula submandibularis] is one of the three major salivary glands. It produces together with the other glands the saliva. The submandibular gland provides the main part of the total amount of saliva. It is located on the lower jaw angle between the lower jaw and digastric muscle.
Attack:
Shock or pressure with the fingertips (Yubisaki ate) or thumb
Consequence:
Whiplash injuries on impact; pressure provides a strong nerve pain (neuralgia); crack of glandular tissue
Comment:
An appropriate counter pressure with the other hand will be useful