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A ctenidium is shaped like a comb or a feather, with a central part from which many filaments or plate-like structures protrude, lined up in a row. Some aquatic gastropods possess a single row of filaments on their ctenidium, known as the monopectinate condition, [ 3 ] and others have a pair of filament rows, known as the bipectinate or ...
The radula (US: / ˈ r æ dʒ ʊ l ə /; pl.: radulae or radulas) [1] is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. [2] It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus.
In the gastrointestinal tract, the term mucosa or mucous membrane refers to the combination of epithelium, lamina propria, and (where it occurs) muscularis mucosae. [1] The etymology suggests this, since the Latin names translate to "the mucosa's own special layer" ( lamina propria mucosae ) and "muscular layer of the mucosa" ( lamina ...
The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary ...
Category for the anatomy of the respiratory system. Subcategories. This category has only the following subcategory. L. Lung anatomy (14 P)
The anus is also on the right side of the body, so that waste matter is efficiently carried away. Bipectinate gills have to be supported by membranes, and these can become fouled with debris and sediment, restricting such gastropods to relatively clean-water environments, such as water flowing over solid rock.
It is a part of the respiratory system of gastropods. It is an opening in the right side of the mantle of a stylommatophoran snail or slug. Air enters through the pneumostome into the animal's single lung, the air-filled mantle cavity. [1] Inside the mantle cavity the animal has a highly vascularized area of tissue that functions as a lung.
[2] [3] [4] Marine gastropods that have a siphon are either predators or scavengers. [5] Although in gastropods the siphon functions perfectly well as a tube, it is not in fact a hollow organ, it is simply a flap of the mantle that is rolled into the shape of a tube. [1]