BIO 2135 Lecture Notes - Circulatory System, Cnidaria, Blood Vessel
1 Oct 2014
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Adaption they are flat, high surface area to volume can occur, diffusion as well. Closed blood vessel system, pumping hurts, most of the circulatory system is the hemocoel and bathes the tissues and extends into the foot. Ctendia gas exchange occurs over the ctendia large surface to volume ratio. Mantle cavity houses the ctenidia allows water to pass through or go over the gills. Clam in current and excurrent siphon, so water pass over the gills (ctenidia) Pericardial cavity but there pericardial cavity is the entire coelom, segemented annelids so entire coleom of each segment. Dorsal ventral blood vessels, dorsal goes to anterior, ventral goes to posterior. Moist surface, in order to have diffusion across your skin. Aquatic, and marine, large surface area of the lopophore in gas exchange. Water vascular system tube feet they branch. Madreporite = valve that replenishes the water passive diffusion bitchess!
