Anatomy Of A Sponge

Basic anatomy sponges contain no organs or even tissue. Anatomy a sea sponges body primarily consists of spicules and spongin.

Generalized Sponge Anatomy

The skeletal elements of sponges are variable and important in taxonomy.

Anatomy of a sponge. Sponges are either radially symmetrical or have no symmetry asymmetrical. Spicules are needle shaped fiberlike structures that act as the sponges skeleton. Anatomy the body of a sponge is a collection of a few different types of cells loosely arranged in a gelatinous matrix called a mesohyl mesoglea or mesenchyme.

Amoeba like cells found throughout the sponge. Sponges are sessile not mobile organisms including both solitary and colony forming types. Morphology and canal system.

Instead they consist of three cell sized layers. Sponges have neither tissues nor organs. Compressed polygonal cells called pinacocytes make up the pinacoderm the external sac layer.

Spongin is a protein that helps provide body support. The cells in the outer layers can move inward and change function. Sponges lack a true body cavity.

Store digest and transport food excrete wastes secrete skeleton and also may give rise to buds in asexual reproduction pinacoderm the outer epidermal layer of cells on a sponge. The body of a sponge has two outer layers separated by an acellular having no cells gel layer called the mesohyl also called the mesenchyme. Sponges exhibit radial symmetry.

Sponges lack true tissues. In the gel layer are either spicules supportive needles made of calcium carbonate or spongin fibers a flexible skeletal material made from protein. Body of a sponge is vase like tubular tube like cylindrical branched cushion shaped etc.

Sponges have a true coelom. Simple worksheet for labeling the parts of the sponge such as the osculum and choanocyte. This mesohyl is the connective tissue of a sponge body and it is supported by the skeletal elements.

Invertebrates Sponges Invertebrates Sponges Phylum