EVERYDAY SCIENCE

Detailed explanation-1: -Pinacoderm is an outer layer of cells made up of pinacocytes in sponges that is almost equivalent to the epidermal layer of other animals. The pinacocytes are flat epithelial cells that form a squamous sheet on the outer surface and canals of sponges.

Detailed explanation-2: -The outer layer of the sponge is the epidermis which is made of flat cells called epithelial cells.

Detailed explanation-3: -Function. Pinacocytes are part of the epithelium in sponges. They play a role in movement (contracting and stretching), cell adhesion, signaling, phagocytosis, and polarity. Pinacocytes are filled with mesohyl which is a gel like substance that helps maintain the shape and structure of the sponge.

Detailed explanation-4: -Pinacocytes, which are epithelial-like cells, form the outermost layer of sponges, enclosing a jelly-like substance called mesohyl. Mesohyl is an extracellular matrix consisting of a collagen-like gel with suspended cells that perform various functions.

Detailed explanation-5: -Pinacocytes. These cells are the “skin cells” of sponges. They line the exterior of the sponge body wall. They are thin, leathery and tightly packed together.