BIOL 348 WWU (KATE) EXAM 2 QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+B 2025 FIRST CLASS PASS

BIOL 348 WWU (KATE) EXAM 2 QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+B 2025 FIRST CLASS PASS 2025 EXAM  BIOL 348 WWU (KATE) EXAM 2 QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+B 2025 FIRST CLASS PASS Which of the following most accurately describes the innervation of skeletal muscle - CORRECT ANSWER Motor neurons communicate with the muscle fiber directly Perimysium - CORRECT ANSWER the connective tissue that surrounds bundles (fascicles) of skeletal muscle cells. The function of calcium ions in skeletal muscle contraction is to - CORRECT ANSWER bind to regulatory proteins leading to a change in shape so that the myosin binding sites on the actin can be exposed The contractile proteins within a muscle fiber (cell) are - CORRECT ANSWER actin and myosin individual muscle fibers (cells) are arranged in bundles called - CORRECT ANSWER fascicles Each muscle fiber is divided or compartmentalized into repeating segments of contraction called - CORRECT ANSWER sarcomeres the ends of the sarcomere, where there are ONLY thin filaments - CORRECT ANSWER I band actin, troponin, tropomyosin - CORRECT ANSWER thin filaments myosin - CORRECT ANSWER thick filament Aponeurosis - CORRECT ANSWER extension from a muscle that forms a broad flat sheet tendon - CORRECT ANSWER extension from a muscle that connects the muscle to bone motor unit recruitment - CORRECT ANSWER when the muscle fibers need to get more help (increasing number of motor units in a contraction) t-tubules - CORRECT ANSWER outpocketings of the plasma membrane nervous system - CORRECT ANSWER responsible for all behaviors, memories, and movements central nervous system - CORRECT ANSWER consists of the brain and spinal cord Normal heart sounds are caused by which of the following events? - CORRECT ANSWER closure of the heart valves cardiac reserve... - CORRECT ANSWER can be improved by regular exercise Hemorrhage with a large loss of blood causes - CORRECT ANSWER a lowering of blood pressure due to change in cardiac output The left ventricular wall of the heart is thicker than the right wall in order to - CORRECT ANSWER pump blood with greater pressure