Is parotid gland purely serous?
Is parotid gland purely serous?
Major salivary glands. Parotid glands: The parotid gland is a purely serous gland, and all the acinar cells are similar in structure to the serous cells (Figures 2 and 3).
Is the parotid gland totally serous?
The parotid gland (Fig. 7.14) is predominantly a serous salivary gland. It is situated below the external auditory meatus and extends on to the ramus of the mandible.
Is parotid serous or mucous?
Parotid glands have mainly serous acini. Submandibular glands have a mixture of mucous and serous acini. Mucous acini stain more weakly than serous acini, because of the techniques used to produce the sections. (look back at histological techniques to remind yourself).
Is parotid gland an acinar?
The parotid, submandibular, and sublingual glands are all compound (branched), tubulo-alveolar (acinar) glands with a merocrine (exocytotic) type of secretion. The secretory product is either serous (a protein product secreted in vesicles) or mucous (a large sulfated glycoprotein).
Are serous glands exocrine?
Serous cells of the pancreas and the salivary glands are typically organized into secretory units called acini….
| Destination of product: | exocrine / endocrine |
|---|---|
| Nature of product: | serous / mucous / mixed |
| Location of gland: | mucosal / submucosal |
What is the main function of parotid?
The primary function of the parotid gland is the creation of saliva.
What causes an infected salivary gland?
Salivary Infection: Causes The most common causes of acute salivary gland infections are bacteria, especially Staphylococcus aureus, or staph. Viruses and fungi can also cause infection in the glands. (Mumps is an example of a viral infection of the parotid glands.)
What is an acinar gland?
A multicellular gland in which the cells secrete specific molecules into an oval or flask-shaped sac. Synonym: acinar gland; acinous gland.
Where are serous glands found?
Serous glands are most common in the parotid gland and lacrimal gland but are also present in the submandibular gland and, to a far lesser extent, the sublingual gland.
What are secretions of exocrine glands called?
The liver and pancreas are both exocrine and endocrine glands; they are exocrine glands because they secrete products—bile and pancreatic juice—into the gastrointestinal tract through a series of ducts, and endocrine because they secrete other substances directly into the bloodstream.
What are the 3 types of exocrine glands?
The three mechanisms by which exocrine glands release their secretions include merocrine, apocrine, and holocrine.
- Merocrine glands are the most common subtype.
- Apocrine glands, in contrast, form buds of the membrane which break off into the duct, losing part of the cellular membrane in the process.
What is the type of acini in the parotid and sublingual glands?
Acini in the parotid glands are almost exclusively of the serous type, while those in the sublingual glands are predominantly mucus cells. In the submaxillary glands, it is common to observe acini composed of both serous and mucus epithelial cells. In the histologic sections of canine salivary gland shown above,…
What is the serous acini?
Serous glands contain serous acini, a grouping of serous cells that secrete serous fluid, isotonic with blood plasma, that contains enzymes such as alpha-amylase. Click here to know more about it. Also asked, what are the acini? In anatomy, an acinus is a round cluster of cells, usually epithelial cells, that looks somewhat like a knobby berry.
What is the difference between parotid glands and submandibular glands?
Parotid glands have mainly serous acini. Submandibular glands have a mixture of mucous and serous acini. Mucous acini stain more weakly than serous acini, because of the techniques used to produce the sections.
What is the histology of salivary acini?
I. Histology of salivary acini (secretory units) Mucous cells have a pale-staining, bubbly cytoplasm and nuclei that appear to be pushed against the basal cell membrane. In contrast, the cytoplasm of serous cells contain distinctly eosinophilic zymogen granules and their nuclei are spherical in appearance.
