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Biology 4
Sample Exam Questions
Chapter 10
Choose the best answer for each question. There is only 1 answer for each question.
1. The layers of connective tissue surrounding a skeletal muscle from the outside to the
inside in correct order are:
a. endoymsium, perimysium and epimysium
b. epimysium, perimysium and endomysium
c. epimysium, endomysium and perimysium
d. perimysium, epimysium and endomysium
2. At the end of a muscle, the fibers of the fascia often converge to form ____________
which attaches the muscle to a bone.
a. a tendon
b. a bundle of muscle fibers
c. the endomysium
d. none of the above
3. During movement, a muscle that aids the prime mover is called a (an)
a. antagonist
b. synergist
c. secondary mover
d. insertion
4. If a person is cold, a good way to warm up is to exercise. What is the mechanism of
this warming?
a. Moving faster prevents the person from feeling the cold air because it moves
past him or her more quickly.
b. Exercise moves blood faster and the friction keeps tissues warm.
c. Muscle contraction uses energy and the energy usage generates heat, which
helps to warm the body.
d. Exercising causes a person to sweat which warms the body.
e. none of the above.
5. The sarcoplasmic reticulum of muscles releases calcium in response to
a. ATP
b. an nerve impulse
c. acetylcholine
d. a muscle contraction
e. both a and b are correct
6. Intermediate fibers:
a. are similar to fast fibers on a histological basis
b. resist fatigue better than do slow fibers
c. contain greater amounts of sarcoplasmic reticulum than do fast twitch fibers
d. require a longer time to recover than do other fiber types after they are
fatigued
e. are none of the above
7. Which of the following is or are true with respect to a muscle?
a. the origin of the muscle remains stationary
b. the tendon is longer than the muscle belly
c. the insertion is proximal to the origin
d. all of the above are true
8. When a muscle contracts,
a. calcium ions bind to the actin filament
b. calcium ions bind to the myosin filament
c. a phosphate breaks off of ATP and energy is released
d. ADP binds to a phosphate forming ATP and energy is stored
e. both “a” and “c”
9. When myosin cross-bridges bind to the active sites on thin filaments,
a. they pull the actin towards the center of the sarcomere
b. they pull the myosin towards the center of the sarcomere
c. the sarcomere lengthens
d. muscle relaxation occurs
10. Myofibrils are composed primarily of
a. actin and myosin
b. ATP and ADP
c. calcium ions
d. cross bridges