front 1 Interactions between actin and myosin filaments of the sarcomere are responsible for The conduction of neural stimulation to the muscle fiber The striped appearance of skeletal muscle Muscle contraction Muscle relaxation Muscle fatigue | back 1 Muscle contraction |
front 2 The area in the center of the A band that contains no thin filaments is the I band M line Zone of overlap Z line | back 2 H band |
front 3 Which of the following is a recognized function of skeletal muscle? Guard body entrances and exits Produce movement Maintain posture Maintain body temperature All of the choices are correct | back 3 All of the choices are correct |
front 4 A single motor neuron together with all the muscle fibers it innervates is called An end foot A dermatome A motor unit An end plate A myotome | back 4 A motor unit |
front 5 The thin filaments of striated muscle are made of which protein(s)? Troponin Nebulin Actin | back 5 Actin |
front 6 Which of the following is not a characteristic of smooth muscle? Smooth muscles do not contain sarcomeres Neurons that innervate smooth muscles are under involuntary control Smooth muscles are uninucleate The thin filaments of smooth muscle fibers are attached to dense bodies Smooth muscle connective tissue forms tendons and aponeuroses | back 6 Smooth muscle connective tissue forms tendons and aponeuroses |
front 7 At each end of the muscle, collagen fibers of the epimysium, and each perimysium and endomysium, come together to form a Tendon Tenosynovium Sheath Satellite cell Ligament | back 7 Tendon |
front 8 The plasma membrane of skeletal is called the Sarcoplasmic reticulum Sarcoplasm Sarcomere Sarcolemma Sarcosome | back 8 Sarcolemma |
front 9 Muscle tissue, one of the four basic tissue groups, consists chiefly of cells that are highly specialized for Contraction Peristalsis Cushioning All of the above | back 9 Contraction |
front 10 The region of the sarcomere containing the thick filaments is the A band M line Z line I band H band | back 10 A band |
front 11 Each skeletal muscle fiber is controlled by a motor neuron at a single Synaptic cleft Neuromuscular junction Synaptic knob Sarcomere Transverse tubule | back 11 Neuromuscular junction |
front 12 The dense layer of connective tissue that surrounds an entire skeletal muscle is the Endomysium Fascicle Perimysium Epimysium Tendon | back 12 Epimysium |
front 13 The types of muscle tissue include all of the following, except Skeletal muscle Striated muscle Cardiac muscle Smooth muscle Noone of the above | back 13 Striated muscle |
front 14 Which of the following best describes the term Z line? Protein that accounts for elasticity of resting muscle Largely made of myosin molecules Storage site for calcium ions Thin filaments are anchored here | back 14 Thin filaments are anchored here |
front 15 The skeletal muscle complex known as the triad consists of actin, myosin, and filaments filaments, myofibrils, and sarcomeres actin, myosin, and sarcomeres a transverse tubule and two terminal cisternae A bands, H bands, and I bands | back 15 A transverse tubule and two terminal cisternae |