A portion of all travel booked on American Airlines may be American EagleÂ® service. American Eagle service is operated by Compass Airlines, LLC, Envoy Air Inc., ExpressJet Airlines, Inc., Mesa Airlines, Inc., Republic Airline Inc., SkyWest Airlines, Inc., or Trans States Airlines, LLC.
Function of Mitochondrial Cristae. Before we can explain the functioning of the crista (plural = cristae), we need to revisit what a mitochondrion does. The mitochondrion is the cellular organelle where cellular respiration takes place.Cellular respiration is the process that creates chemical energy in the form of ATP from simple food molecules.ristae are folds of the inner mitochondrial membrane. The electron transport chain and chemiosmosis takes place on this membrane as part of cellular respiration to create ATP and can be seen in the diagram:
The ridge in the upper part of the picture is the high pressure of the upper esophageal sphincter which only opens for a short time to let water pass. Peristalsis is a radially symmetrical contraction and relaxation of muscles that propagates in a wave down a tube, in an anterograde direction.eristaltic movement comprises relaxation of circular smooth muscles, then their contraction behind the chewed material to keep it from moving backward, then longitudinal contraction to push it forward. Earthworms use a similar mechanism to drive their locomotion, and some modern machinery imitates this design.