Final exam section 1

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1. The automatic tendency to maintain a relatively constant internal environment is called homeostasis.  True  False 2. The ATP/CP pathway is considered aerobic metabolism.  True  Fal... se 3. About 98% of the human body is composed of only six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorous.  True  False 4. Mitochondria are known as the powerhouse of the cell.  True  False 5. The heart, arteries, and veins are part of the circulatory system.  True  False 6. There are 80 bones in the axial skeleton.  True  False 7. The origin is the distal attachment of a muscle.  True  False 8. Type II muscle fibers are aerobic.  True  False 9. In a concentric contraction, the muscles shorten to produce movements.  True  False 10. An antagonist muscle is one that has an action directly opposite to that of the agonist.  True  False 11. Magnitude, direction, point of application, and line of action are the four components of force.  True  False 12. Newton's third law of motion deals with force and its relationship to mass and acceleration.  True  False 13. A high development of the agonist-antagonist function is essential to the development of dynamic balance.  True  False 14. The hamstrings muscles are two-joint muscles that act at the knee and ankle.  True 15. Given certain constraints, strength is our ability to contract our muscles with maximum force.  True  False 16. The Valsalva maneuver involves expiring against a closed glottis and, when combined with contracting muscles of the abdomen and ribcage, creates rigidity in the entire torso.  True  False [Show More]

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