Eoc Study Guide (355 Terms With Correct Answers For 2024 Update).

Sliding Filament Theory? {Ans: In order for muscles to contract(shorten and thicken), they must receive a message from the CNS to do so. The messages come through efferent neurons(nerves that move away from the CNS).The sliding filament mechanism explains muscle contractions. Muscle fibers contain many myofibrils(―muscle fibers‖) that allow the muscle cells to contract. The myofibrils contain thick and thin filaments attached to the Z disk (Z line). Thick filaments are made of myosin protein and thin ones of actin protein. The two proteins can twist around each other, shortening the sarcomere during contraction. Tropomyosin and troponin are proteins that control how actin and myosin interact—when they contract and twist and when they unravel and relax. Afferent neuron send messages back from muscles to the CNS.If there are problems with nerves, it can lead to issues with muscle function (i.e. Carpal Tunnel Syndrome)}Retinitis Pigmentosa {Ans: -group of rare, genetic disorders that involve a breakdown and loss of cells in the retina—which is the light sensitive tissue that lines the back of the eye. Common symptoms include difficulty seeing at night and a loss of side (peripheral) vision.}Renal Artery {Ans: - branches off of the aorta bringing waste-filled