BIO 348 EXAM 2 QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS

BIO 348 EXAM 2 QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS 2025 EXAM  BIO 348 EXAM 2 QUESTIONS AND 100% APPROVED CORRECT ANSWERS GRADED A+ 2025 FIRST CLASS PASS which of the following most accurately describes the innervation of skeletal muscles - CORRECT ANSWER motor neurons communicate with the muscle fiber directly the perimysium - CORRECT ANSWER is 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 are arranged in bundles called - CORRECT ANSWER fascicles each muscle fiber is divided or compartmentalized into repeating segments of contraction called - CORRECT ANSWER sarcomeres I Band - CORRECT ANSWER the ends of the sarcomere, where there are ONLY thin filaments thin filaments - CORRECT ANSWER actin, troponin, tropomyosin thick filament - CORRECT ANSWER myosin 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 *** - CORRECT ANSWER nerve tissue in the brain and spinal cord appears either white or gray. The white matter contains axons that are myelinated. *** - CORRECT ANSWER in a resting neuron, there are more potassium ions inside the cell (intracellular) than outside the cell (extracellular) *** - CORRECT ANSWER action potentials that occur in the axon of a neuron operate according to an "all or none" principle axon - CORRECT ANSWER during a nerve impulses, the action potential is carried away from the nerve cell body by the ? multipolar - CORRECT ANSWER if classfied by their shape or structure, most neurons in the brain and spinal cord are ______ neurons because they have several dendrites and only one axon graded potentials - CORRECT ANSWER the membrane potentials that can vary in size, strength, or amplitude and are found on the dendrites and cell bodies of neurons are called axon hillock - CORRECT ANSWER the initial segment of the axon where it is attached to the cell body and where the action potential begins