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Scutigeromorph centipedes are an exception, having unpaired, non-closable spiracles at the posterior edges of tergites. [2] Velvet worms have tiny spiracles scattered over the surface of the body and linked to unbranched tracheae. There can be as many as 75 spiracles on a body segment. They are most abundant on the dorsal surface.
The spiracle is often located towards the top of the animal allowing breathing even while the animal is mostly buried under sediments. [5] As sharks adapted a faster moving lifestyle some became obligate ram ventilators , breathing exclusively by forcing water through their gills by swimming; among these are requiem sharks and hammerhead sharks ...
Insects have spiracles on their exoskeletons to allow air to enter the trachea. [1] [page needed] In insects, the tracheal tubes primarily deliver oxygen directly into the insects' tissues. The spiracles can be opened and closed in an efficient manner to reduce water loss. This is done by contracting closer muscles surrounding the spiracle.
Myriapods breathe through spiracles that connect to a tracheal system similar to that of insects. There is a long tubular heart that extends through much of the body, but usually few, if any, blood vessels. [12] Malpighian tubules excrete nitrogenous waste into the digestive system, which typically consists of a simple tube.
In cetology, the study of whales and other cetaceans, a blowhole is the hole (or spiracle) at the top of the head through which the animal breathes air. In baleen whales , these are in pairs. It is homologous with the nostril of other mammals , and evolved via gradual movement of the nostrils to the top of the head. [ 1 ]
A team of Japanese scientists who discovered mammals can breathe through their butts — a procedure that could eventually help sick humans get oxygen — received a top “honor” at a Nobel ...
A very numerous and various class consisting of small animals, breathing through lateral spiracles, armed on all sides with a bony skin, or covered with hair; furnished with many feet, and moveable antennae (or horns), which project from the head, and are the probable instruments of sensation. Linnaean Characteristics [1]
Among those collecting their prizes was a Japanese research team led by Ryo Okabe and Takanori Takebe who discovered that mammals can breathe through their anuses.