GENERAL HISTOLOGY

TONGUE MIXED SALIVARY GLAND

ORAL CAVITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
. It is known that the submandibular salivary gland has mucuse secretory portions consisting of mucocytes. What signs characterise these cells?
A
Basal striation
B
Flattened nuclei and light cytoplasm
C
Basophilic cytoplasm
D
Microvili
E
Round nuclei in the center of the cell
Explanation: 

Detailed explanation-1: -Compare the appearance of mucous and serous secretory cells. The serous cells possess granular cytoplasm and nuclei which are spherical and vesicular in appearance. The mucous cells have pale staining cytoplasm and nuclei which appear to be pushed against the basal cell membrane.

Detailed explanation-2: -Most animals have three major pairs of salivary glands that differ in the type of secretion they produce: parotid glands produce a serous, watery secretion. submaxillary (mandibular) glands produce a mixed serous and mucous secretion. sublingual glands secrete a saliva that is predominantly mucous in character.

Detailed explanation-3: -The submandibular gland produces both serous and mucous saliva (in a 3:2 ratio). It is found in the floor of the mouth and in the suprahyoid region of the neck. A large part of the gland is visible just beneath the inferior border of the mandible.

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