BMSC 207 Muscles Final || with Errorless Solutions 100%.

What type of muscle makes up 40% of bodyweight? correct answers Skeletal Muscle Satellite cells lie just outside the muscle ____________________ correct answers fiber membrane What do satellite cells do when they become active? correct answers differentiate into muscle when needed for muscle growth and repair what type of muscle is unstriated? correct answers smooth muscle The entire muscle is enclosed in a _____________________ sheath correct answers connective tissue Name the components of a whole muscle in order from greatest to smallest correct answers Whole muscle - Muscle fascicles - Muscle fibers - Myofibrils - Actin - Thin filaments Skeletal muscle moves a bone at a joint, such as flexing the forearm at the elbow. How is the opposite action produced (for example, extension at the elbow)? correct answers an Agonistic muscle produces the opposite movement the cell membrane of a muscle is called the correct answers sarcolemma the enlarged end regions of the sarcoplasmic reticulum are called the correct answers terminal cisternae The cytosol between the myofibrils contain many ___________ and _________ correct answers glycogen granules, mitochondria ________ forms thick filaments and ________ forms the thin filaments correct answers myosin, actin Myosin acts as an ATPase - explain what this means. correct answers the enzyme hydrolyzes ATP into ADP and Pi creating the energy needed for movement The _________ produces much of the ATP for muscle contraction correct answers mitochondria As contraction takes place, actin and myosin ______________ length correct answers do not change Why are the ends of the A band the darkest region of the sarcomere? correct answers the thick and thin filaments overlap In a neuromuscular junction, synaptic vesicles in the motor neuron contain what neurotransmitter? correct answers acetylecholine