Chapter 7: Muscle Mechanics

Which of the following is a characteristic of cardiac muscle: A. They are striated B. They are faster than skeletal muscles C. They can achieve tetany D. They are multi nucleated E. They are voluntary

A. They are striated

The additional oxygen required during the recovery period to restore the normal pre-exertion levels is called the: A. Aerobic oxygen threshold B. Oxygen debt C. Anaerobic oxygen threshold D. Refractory oxygen amount

B. Oxygen debt

A resting muscle generates most of its ATP by: A. Aerobic Respiration B. Anaerobic Respiration C. Glycolysis D. Conversation of creatine phosphate E. Heat loss

D. Conversation of creatine phosphate

Smooth muscle cells: A. Are spindle shaped B. Are multi nucleated C. Contain intercalated discs D. Are the largest of the muscle cells E. Are innervated by motor neurons

A. Are spindle shaped

Creatine serves to: A. supply energy to synthesize ATP B. Synthesize glucose C. Decompose ATP D. Decompose ADP

A. Supple energy to synthesize ATP

The term used to describe muscular growth in response to usage is: A. Atrophy B. Hypertrophy C. Myopathy D. Multiple Sclerosis E. Dystrophy

B. Hypertrophy

Non-striated, involuntary muscle is: A. Red skeletal B. Cardiac C. Smooth D. White skeletal E. Intermediate skeletal

C. Smooth

During activities requiring aerobic endurance: A. Amino Acids are not broken down. B. Most of the muscle's energy is produced in mitochondria. C. Muscle hypertrophy often occurs D. Glycogen and glycolysis are the primary sources of reserve energy E. Fatigue occurs every few minutes.

B. Most of the muscle's energy is produced in mitochondria

Which of the following is true about red muscles: A. Red muscles fatigue quickly B. Red muscles are slower than white muscles C. Red muscles contain less myoglobin than white muscles D. Red muscles have fibers of greater diameter than those of white muscles E. Red muscled have fewer mitochondria than white muscles

B. Red muscles are slower than white muscles

A person whose genetic makeup makes him or her a better marathon runner than a sprinter probably has more ______ in his or her leg muscles A. Fast fibers B. Slow fibers C. White fibers D. Intermediate fibers

B. Slow Fibers