BIOL 2030 Lecture Notes - Lecture 4: Polyphagia, Anandamide, Cannabis Sativa
Document Summary
Velum present, reduces the amount of water that can be expelled, Gastrovascular cavity connects to 4 radial canals and a ring canal. 4 gastric pouches connect to a complex system of radial canals and a ring canal. A tentacle or group of tentacles at each corner of the bell margin. Base of each tentacle differentiated into a blade like pedalium. Velarium present (similar to velum but contains endodermic canals. About the size of a soccer ball. Has about 10-60 tentacles on each corner, around 2 m long each. Only 3 m of tentacle will kill an adult human. Hemolytic toxins that have profound effects on the cardiovascular system. Cnidae are the biggest in the animal kingdom. Nematocyst are common cnidae found in all cnidarian classes, abundant on the tentacles and oral regions (clustered into batteries), discharge stimulated by chemical or physical contact. Increased in hydrostatic pressure caused by a rapid influx of water.
