Digestive System: Oral Cavity


Taste Buds are oval with pale-staining that extend through the thickness of the epithelium. They have a small opening at the epithelial surface called the taste pore. There are three cell types:

Acini of the Salivary Glands. There are three types:

Duct systems have three parts:

In serous glands, there are highly developed striated ducts, which modify secretions by removal or addition of components. In mucous glands, there are poorly developed striated ducts, which do not modify secretions.

Parotid glands are totally serous. They are the largest salivary gland with long, narrow intercalated ducts and large, conspicuous striated ducts. They may contain much adipose tissue. Secretions sometimes contain pieces of the facial nerve (CN VII). Presence of facial nerve is a diagnostic characteristic of the parotid glands. Viral infections of the parotid (ex. mumps) often damages the facial nerve

Submandibular glands are mixed glands with mostly serous secretions. Some mucous acini capped with serous demilunes can be found among the serous acini.

Sublingual glands are the smallest salivary glands, which empty directly into the floor of the mount or into submandibular ducts. Mucous acini predominate, and some acini have demilunes.