BioL 223 - Chapter 10 Muscle Tissue

5) 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

A) endomysium

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.

A) endomysium

6) 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

A) group of muscle fibers that are encased in the perimysium.

15) The plasma membrane of a skeletal muscle fiber is called the A) sarcolemma. B) sarcomere. C) sarcosome. D) sarcoplasmic reticulum. E) sarcoplasm.

A) sarcolemma

3) At each end of the muscle, the collagen fibers of the epimysium, perimysium, and endomysium, come together to form a A) tendon. B) satellite cell. C) ligament. D) tenosynovium. E) sheath.

A) tendon

11) 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

B) M line

1) Muscle tissue, one of the four basic tissue groups, consists chiefly of cells that are highly specialized for A) conduction. B) contraction. C) peristalsis. D) cushioning. E) secretion

B) contraction

4) The dense layer of connective tissue that surrounds an entire skeletal muscle is the A) tendon. B) epimysium. C) endomysium. D) perimysium. E) fascicle.

B) epimysium

17) Muscle fibers differ from "typical cells" in that muscle fibers A) lack a plasma membrane. B) have many nuclei. C) are very small. D) lack mitochondria. E) have large gaps in the cell membrane

B) have many nuclei

16) Which of the following best describes the term sarcomere? A) protein that accounts for elasticity of resting muscle B) repeating unit of striated myofibrils C) storage site for calcium ions D) thin filaments are anchored here E) largely made of myosin molecules

B) repeating unit of striated myofibrils

14) The repeating unit of a skeletal muscle fiber is the A) sarcolemma. B) sarcomere. C) sarcoplasmic reticulum. D) myofibril. E) myofilament

B) sarcomere

8) 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

B) tendon

9) 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

C) 6, 2, 4, 5, 1, 3

10) 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

C) muscle contraction

13) Skeletal muscle fibers are formed from embryonic cells called A) sarcomeres. B) myofibrils. C) myoblasts. D) fascicles. E) myomeres

C) myoblasts

18) Which of the following best describes the term sarcoplasmic reticulum? A) protein that accounts for elasticity of resting muscle B) repeating unit of striated myofibrils C) storage and release site for calcium ions D) thin filaments are anchored here E) largely made of myosin molecules

C) storage and release site for calcium ions

20) The region of the sarcomere containing the thick filaments is the A) Z line. B) M line. C) H band. D) A band. E) I band.

D) A band

12) 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

D) produce large amounts of muscle proteins

19) Which of the following best describes the term Z line? A) protein that accounts for elasticity of resting muscle B) repeating unit of striated myofibrils C) storage site for calcium ions D) thin filaments are anchored here E) largely made of myosin molecules

D) thin filaments are anchored here

2) Which of the following is a recognized function of skeletal muscle? A) produce movement B) maintain posture C) maintain body temperature D) guard body entrances and exits E) All of the answers are correct

E) All of the answers are correct.