33. Which of the following sentences is NOT correct? A. Cancellous bone (trabecular) is spongy bone B. White fibers make up fast-twitch muscle C. Muscle spindle is a type of receptor that detects muscle length D. Exocrine gland secretes its product directly into the bloodstream E. When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stinulated to contract

3. There are three types of skeletal muscles we discussed in class. a. List all 3 b. All of these skeletal muscle types utilize Ca²+ at some point during excitation, excitation contraction coupling, and contraction. Describe the role of Ca²+ in stimulation to skeletal muscle excitation to contraction. c. List at least 2 other features of skeletal muscle types that you can compare across all three types. OC

A decline in a skeletal muscle's ability to maintain a constant level of force or tension after prolonged repetitive stimulations is called A. complete tetanus B. recruitment C. fatique D. rigor mortis

Which of the following would most likely cause hypertrophy of skeletal muscle in the arms Select one: a. using a computer for most of your job b. muscle cramps due to poor hydration c. immobilization due to wearing a cast d. working out by lifting weights O O O O

The fewer muscle fibers present in a motor unit and the greater the number of motor units in a muscle as a whole: 1. the less likely these muscle fibers will fatigue. 2. the less likely an action potential will be generated in the muscle fibers of that motor unit. 3. the stronger the contractions of muscle fibers in that motor unit.

1. This term describes the resting state of a muscle. A. muscle tone B. none of the other choices are correct C. muscle atrophy D. motor unit

Which of the following characteristics is true of BOTH skeletal and cardiac muscle tissue? Select one: a. involuntary control O b. known as heart muscle O c. voluntary control O d. striated in appearance O

Which of the following statements relating to the developmental aspects of muscles is false? a. All muscle tissue types arise from myoblasts b. Skeletal muscles become amitotic while smooth muscles regenerate throughout life c. Sarcopenia begins by age 30 and is irreversible d. Body strength per unit muscle mass is the same in both sexes  e. none of the above   Which of the following structures is located in the head region of the thick filament myosin? a. actin binding site b. ATP binding site c. ATPase enzyme d. all of the above e. none of the above