Bio 252 Final Exam Chamberlain LV Latest Questions And Answers

Bio 252 Final Exam Chamberlain LV Latest Questions And Answers Muscle Tissue Property: Electrical Excitability ANS ions are charged molecules that have different concentrations between a semipermeable membrane Muscular Tissue Property: Contractility ANS the ability to forcefully contract Muscular Tissue Property: Extensibility ANS the ability to stretch Muscular Tissue Property: Elasticity ANS the ability to return to your original shape Microscopic Anatomy of a Skeletal Muscle Fiber ANS -each mature skeletal muscle fiber has 100+ nuclei -once fusion has occurred the muscle fiber loses its ability to undergo cell division -skeletal muscles are set before you are born and last a life time Control of Muscle Tension: Sliding Filament Mechanism ANS -myosin pulls on actin, causing thin filament to slide forward -consequently, Z discs move toward each other and the sarcomere shortens -thanks to structural proteins, there is a transmission of force throughout the entire muscle ***Filaments do not change in length