PSL280H1 Chapter Notes -Pinniped, Thoracic Cavity, Multifidus Muscle
Document Summary
Move them like birds do in flight. Allows for fast swimming with the capability to do tight turns butinstable fore limbs have twice the sa than the pelvic limbs trajectory. Hind limbs are the major source of propulsion while forflippers for steering in paddling motion. Move in side to side manner moving a lot of water= thrust. Not as fast as otariid swimming but more stable. Humpback whale- 1/3 length of its body; helps with high maneuverability while feeding. Has tubercules on anterior side which help as lifting devices to control water over the fin to help maintain lift. One of most agile and mauverable cetaceans in existence. Ligament layer from caudal keel and sides of caudal fin. Flukes made mostly with inner core of dense touch fibrous tissue with envelope of ligaments and numerous blood vessles to help retain heat in countercurrent direction. Compressed caudal vertebre to notch of flukes flat and act as support.
