BI256 Lecture Notes - Lecture 12: Cardiac Muscle, Nerve Net, Statocyst
Document Summary
Myo brils associated with the nutritive muscular cells and epithelial muscular cells. Sensory structures contained within a structure - rhoplaium - sense organ (in scyphoid medusa) Statocyst - for control of balance (gravity) (sensory cells) Sensory lappets - touch and or chemical receptors. Corals very important to coral reef ecosystems. Increase in frequency and severity associated with global warming. Metozoaan animals are monophyletic sessile and asymmetrical in adults. Penapaderm this represents the incipient tissue (outer layer > almost true epithelium but lacking basement membrane) Cell type that is important is coanotyes. Body forms (increase in complexity as you go across and ltering ef ciency and size) *not an evolutionary series. Dimorphism in that they have a polyp and medusa type. Structural elements made of either calcium carbonate or silica that are embedded in the mesophyll. Also triploblastic and either acoelomate or pseudocelomate. Placed at base of bilateral animal tree. Small lat worms <5 mm in length.
