The advantage of having many nuclei in a skeletal muscle fiber is the ability to
A) contract much more forcefully.
B) produce more ATP with little oxygen.
C) store extra DNA for metabolism.
D) produce large amounts of muscle proteins.
E) produce nutrients for muscle contraction.
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Question 2) In a sarcomere, the central portion of thick filaments are linked laterally by proteins of the
A) Z line.
B) M line.
C) H band.
D) A band.
E) I band.
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Question 3) Interactions between actin and myosin filaments of the sarcomere are responsible for
A) muscle fatigue.
B) the conduction of neural stimulation to the muscle fiber.
C) muscle contraction.
D) muscle relaxation.
E) the striped appearance of skeletal muscle.
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Question 4) A(n) ________ can be described as a broad tendinous sheet.
A) fasciae
B) retinaculum
C) aponeurosis
D) interstitium
E) tympanum
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Question 5) Put the following structures in order from superficial to deep. 1. muscle fiber 2. perimysium 3. myofibril 4. fascicle 5. endomysium 6. epimysium
A) 1, 5, 4, 3, 2, 6
B) 6, 2, 5, 4, 1, 3
C) 6, 2, 4, 5, 1, 3
D) 1, 3, 5, 6, 4, 2
E) 2, 3, 1, 4, 6, 5
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Question 6) The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is called a(n)
A) fascicle.
B) tendon.
C) ligament.
D) epimysium.
E) myofibril.
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Question 7) The delicate connective tissue that surrounds the skeletal muscle fibers and ties adjacent muscle fibers together is the
A) endomysium.
B) perimysium.
C) epimysium.
D) superficial fascia.
E) periosteum.
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Question 8) A fascicle is a
A) group of muscle fibers that are encased in the perimysium.
B) layer of connective tissue that separates muscle from skin.
C) group of muscle fibers that are all part of the same motor unit.
D) group of muscle fibers and motor neurons.
E) collection of myofibrils in a muscle fiber.
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Question 9) Nerves and blood vessels that service a muscle fiber are located in the connective tissues of its
A) endomysium.
B) perimysium.
C) sarcolemma.
D) sarcomere.
E) myofibrils.
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Question 10) The dense layer of connective tissue that surrounds an entire skeletal muscle is the
A) tendon.
B) epimysium.
C) endomysium.
D) perimysium.
E) fascicle.
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