Chapter 10, Problem 10.18a
What is thought to cause excess postexercise oxygen consumption?
Video transcript
Fill in the blanks: Resistance-type activities will likely rely on_______energy sources, whereas endurance activities will probably rely on_____energy sources.
Which of the following is not likely to result from endurance training alone?
a. Increase in oxidative enzymes in the muscle fiber
b. Increased numbers of mitochondria
c. Hypertrophy of the muscle fibers
d. Increase in blood supply to the muscle fibers
Which of the following factors is/are responsible for muscular fatigue? (Circle all that apply.)
a. Accumulation of chemicals, including calcium and phosphate ions & increased blood flow to the muscle
b. Decreased availability of oxygen
c. Psychological and environmental factors
d. Depletion of key metabolic fuels, such as creatine phosphate
List some of the functions of smooth muscle tissue.
Which of the following best describes single-unit smooth muscle tissue?
a. The fibers function individually.
b. It is found in organs that require precise control of contraction.
c. It contains gap junctions that couple the fibers electrically.
d. The amount of tension produced varies with the number of muscle cells recruited.
How does a skeletal muscle fiber differ structurally from typical cells?