studyguide_9_2010_muscle[1]

studyguide_9_2010_muscle[1] - Zoology 328 Spring 2010 Study...

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Zoology 328 Spring 2010 Study Guide 9 – Axial Skeleton & Muscle Words to Know notochord arcualia centrum ceratotrichia lepidotrichia scapula clavicle cleithrum coracoid ileum ischium pubis actin myosin sliding filament syncytium myoblast myocyte isotonic isometric myoblast myocyte myotome myomere myosepta epaxial hypaxial hypobranchial branchiomeric Concepts, Functions, Relationships, Interpretations, etc. 1. What prevents the body from telescoping in Amphioxus? What happens to the notochord during evolution? What are arcualia and where are they found? 2. Where and from what precursors do vertebrae form? What vertebral specializations are apparent in tetrapods? 3. What is the fin fold theory? What motions are described by the terms yaw, pitch & roll? What advantages would "fin folds" convey? 4. What is the role of basal and radial pterygiophores in the evolution of fins and limbs? What is the difference between ceratotrichia and lepidotrichia? Describe the fins of the Chondrichthyes. The Osteichthyes. 5. Compare the “biserial” dipnoan (“lungfish”) fin to the “uniserial” ancestral rhipidistian fin. Which seems of greater significance in the evolution of the tetrapod limb?
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studyguide_9_2010_muscle[1] - Zoology 328 Spring 2010 Study...

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