Muscular System Multiple Choice

Detailed not needed, just verifying choice

1. Which of the following does NOT compress the abdomen ______________. latissimus dorsi
rectus abdominis
external oblique
transversus abdominis
internal oblique

2. Paralysis of which of the following would make an individual unable to flex the thigh ______________.
iliopsoas and rectus femoris
vastus medialis
vastus intermedius
vastus lateralis
biceps femoris

3. Which of the following are composed of myosin ______________. thin filaments
all myofilaments
thick filaments
Z lines
light bands

4. Which of the following connective tissues surrounds an individual muscle cell ______________.
sarcolemma
endomysium
perimysium
fascicle
epimysium

5. Which of the following groups of terms is placed in order from largest to smallest ______________.
fascicle, fiber, myofibril, myofilament
fiber, myofibril, myofilament, fascicle
myofilament, myofibril, fiber, fascicle
fascicle, fiber, myofilament, myofibril
fiber, myofibril, fascicle, myofilament

6. A muscle located on the dorsal side of the body is the ______________.
trapezius
rectus femoris
pectoralis major
external intercostals
rectus abdominis

7. The mechanical force of contraction is generated by ______________.
a sliding of thin filaments past thick ones
the temporary disappearance of thin filaments
shortening of the thick filaments
shortening of the thin filaments
the "accordian-like" folding of thin and thick filaments

8. Muscle tone is ______________.
a state of sustained partial muscular contraction that is vital for the health of muscles
the ability of a muscle to maintain a contraction against an outside force
the feeling of well-being following exercise
the condition of atheletes after intensive training
the result of increased neuromuscular system coordination and increased metaboloc rate

9. During muscle contraction, myosin cross bridges attach to active sites of ______________.
Z lines
actin filaments
the H zone
myosin filaments
thick filaments

10. The broadest muscle of the back is the latissimus dorsi.
True
False

11. When a muscle fiber contracts, the I bands diminish in size, the H zones disappear, and the A bands move closer together but do not diminish in length. True
False

12. A prime mover of the arm that acts in adduction is the deltoid. True
False

13. Plantar flexion at the ankle joint is accomplished by the tibialis anterior muscle.
True
False

14. The effect of the neurotransmitter on the muscle cell membrane is to modify its permeability properties temporarily.
True
False

15. An aponeurosis is a ropelike piece of muscle fascia that forms indirect connections to muscles of the leg.
True
False

16. The sarcoplasmic reticulum is vital to the integrity of muscle contraction.
True
False

17. Oxygen debt refers to the oxygen required to make creatine phosphate.
True
False