Appendicular MusclesOnline version Appendicular Muscles by Cindy Paredes 1 Which of the following muscles is the prime mover for inhalation? a internal intercostals b external intercostals c diaphragm d stylohyloid 2 What is the longest muscle in the human body? a iliopsoas b sartorius c erector spinae d semitendinosus 3 Muscle fibers are arranged in bundles called? a compartments b fascicles c retinacula d aponeuroses 4 Skeletal muscle is called____, because it is usually subject to conscious control. a excitable b contractile c striated d voluntary 5 Which of the following is predominately made up of myosin? a G actin b F actin c thin filament d thick filament 6 To stimulate muscle contraction, acetylcholine is released from the _____ into the synaptic cleft. a synaptic vesicles b junctional folds c sarcoplasmic reticulum d sarcolemma 7 How many muscle fibers stimulate one somatic motor neuron? a 0 b 1 c 2 d 3 8 Which of the following is not a characteristic of a muscle cell? a plasticity b contractility c conductivity d extensibility 9 Loss of muscle mass from lack of activity is called? a atrophy b myopathy c dystrophy d apathy 10 Tendinous intersections divide the _____ into segments that are externally visible on the abdomen of a well-muscled person. a vastus lateralis b serratus anterior c rectus abdominis d quadriceps femoris 11 Which of the following muscles is not externally visible on the trunk of the body? a transverse abdominal b latissimus dorsi c trapezius d pectoralis major 12 groups of muscles are separated by which of the following? a epimysium b fascicles c perimysium d fascia 13 The_____ originates on the zygomatic arch and inserts on the angle of the mandbile. a masseter b buccinator c temporalis d genioglossus 14 Which of the following muscles of mastication would be responsible for mandibular elevation? a temporalis b lateral pterygoid c stylohyoid d zygomaticus major 15 Muscle grows in bulk due to _____. a mitosis b meiosis c exercise d water 16 Which muscle fibers fatigue more easily? a slow oxidative b fast glycolytic c slow glycolytic d fast oxidative 17 The rectus femoris is an example of what muscle shape? a fusiform b parallel c triangular d pennate 18 Where would you find numerous gap junctions in muscular tissue? a the sarcoplasmic reticulum of skeletal muscle b the A bands of skeletal and cardiac muscle c sarcolemma of skeletal muscle d intercalated disks of cardiac muscle 19 Which muscle(s) can contract without the need for nervous stimulation? a skeletal muscle only b smooth muscle only c cardiac muscle only d smooth and cardiac muscle 20 Smooth muscle is capable of mitosis. a True b False 21 Slow oxidative muscle fibers have all of the following except a an abundance of myoglobin b an abundance of glycogen c high fatigue resistance d a red color
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