GENERAL HISTOLOGY

TONGUE MIXED SALIVARY GLAND

ORAL MUCOSA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The extensions of epithelium into the connective tissue, as appear in histologic section are known as ____
A
epithelial squames
B
rete ridges
C
basement membrane
D
connective tissue papillae
Explanation: 

Detailed explanation-1: -Rete pegs (also known as rete processes or rete ridges) are the epithelial extensions that project into the underlying connective tissue in both skin and mucous membranes.

Detailed explanation-2: -The basal lamina, a mixture of glycoproteins and collagen, provides an attachment site for the epithelium, separating it from underlying connective tissue. The basal lamina attaches to a reticular lamina, which is secreted by the underlying connective tissue, forming a basement membrane that helps hold it all together.

Detailed explanation-3: -In normal human skin, rete ridges play multiple roles in skin homeostasis. These interdigitations of the epidermis and dermis increase the contact area between these layers, enhancing adhesion. These distinct niches in skin also provide a specialized environment for keratinocyte stem cells.

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