Groups of muscles are separated by which of the following?
A. Epimysium
B. Fascicles
C. Perimysium
D. Endomysium
E. Fascia
Answer: E
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The partial pressure of oxygen
a. in the atmospheric air averages 79 percent of total atmospheric pressure b. in blood is the most important factor that determines percent O2 saturation of Hb c. in arterial blood decreases when Hb preferentially combines with CO rather than O2 d. is both b and c e. is none of the above
At the onset of exercise when the small ATP reserve in muscle fibers is quickly depleted, _____ occurs next.
A. direct phosphorylation of ADP
B. production of ATP by aerobic respiration
Identify the statement that correctly describes ventilation-perfusion matching in the lungs of a healthy individual in the upright posture.
A. alveoli at apex overperfused B. alveoli at apex underventilated C. alveoli at base overperfused D. alveoli at base overventilated E. matching unaffected by gravity
The body system that provides support and protection as well as being a site of blood cell production (hemopoiesis) is the ____________ system.
A. skeletal ?B. muscular ?C. cardiovascular ?D. respiratory ?E. lymphatic