Upper Section of Sponge

| View Cart ⇗ | Info

An illustration of the upper portion of a sponge: p, Pore; s, Subdermal cavity; c1, chief fiver of the skeleton; c2, connecting film. The sponges or poriferans (from Latin porus “pore” and ferre “to bear") are animals of the phylum Porifera. Their bodies consist of an outer thin layer of cells, the pinacoderm and an inner mass of cells and skeletal elements, the choanoderm. Sponges do not have nervous, digestive or circulatory systems. Instead most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes, and the shapes of their bodies are adapted to maximize the efficiency of the water flow.




Benson John Lossing, ed. The New Popular Educator (London, England: Cassell & Company Limited, 1891)


TIFF (full resolution)

2400×2081, 1.7 MiB

Large GIF

1024×887, 283.0 KiB

Medium GIF

640×554, 136.9 KiB

Small GIF

320×277, 41.3 KiB