GENERAL HISTOLOGY

Detailed explanation-1: -Two unique features of mollusks are the mantle and radula (see Figure above). The mantle is a layer of tissue that lies between the shell and the body. It secretes calcium carbonate to form the shell. It forms a cavity, called the mantle cav ity, between the mantle and the body.

Detailed explanation-2: -Sea animals like mollusks make their shell by excreting proteins and minerals from a structure called the mantle. Calcium carbonate is the primary compound in mollusk shells. The calcium carbonate binds to the proteins secreted by the mantle to form the shell.

Detailed explanation-3: -Mollusks also have an extension of the body wall called the mantle. This portion of the animal’s anatomy is responsible for secreting the shell. The mantle encloses the mantle cavity which contains the Ctenidia (gills), anus and excretory pores.

Detailed explanation-4: -The mantle produces the shell in mollusks such as clams and snails. The mantle also functions in respiration, waste disposal, and sensory reception. In addition, the mantle is related to another distinctive feature, the mantle cavity. In aquatic snails and many other mollusks, the mantle cavity houses a gill.