Question

Compound tubuloalveolar gland is.
(a) Parotid gland
(b) Brunner’s gland
(c) Submandibular glands
(d) Oil gland

Answer 1

Hint: Glands that release their secretions into tubular or ducts. Their secretions help in the digestion process.

Complete answer:
The glands which are categorized by the shape comes under alveolar glands. They are also called tubular glands. They contain sacs for secretion. The glands start with simple branched tubular structures and this tubular branch terminates in alveoli. They are called tubuloalveolar glands. This type of glands can be seen in salivary glands, esophageal glands, and mammary glands.

Additional information:
- Gastric glands, Brunner’s glands, and crypts of lieberkuhn are the digestive glands present in the alimentary canal wall and the digestive glands which are associated with the gut are salivary glands, liver, and pancreas.
- Parotid glands, submaxillary glands, and sublingual glands are the three pairs of salivary glands present in the man.
- The glands which are present below the ear pinna or on the inner surface of cheeks are parotid glands.
- The glands that are present below the angles of the lower jaw are submaxillary or submandibular.
- The glands that are present below the tongue are called sublingual glands.
- These three salivary glands are formed of serous and mucous cells that secrete saliva.
- The glandular tissue is divided into lobes that contain clusters of cells called alveoli.
- Saliva secreted by the glands is released into the lobes and then into alveoli.
- So these glands are called tubuloalveolar glands.
So, the correct answer is ‘parotid glands’ and ‘submandibular glands’.

Note:
- Human saliva contains water, cells, mucin, and the enzyme ptyalin and lysozyme. The enzyme ptyalin is also called salivary amylase lysozyme secreted by the salivary glands is used to kill bacteria.
- The pH of saliva is 6.8.