Exam 8: Muscle Physiology

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code: a.Slow-oxidative fiber b.Fast-oxidative fiber c.Fast-glycolytic fiber d.Slow-oxidative fiber and fast-oxidative fiber e.Fast-oxidative fiber and fast-glycolytic fiber f.Slow-oxidative fiber, fast-oxidative fiber and fast-glycolytic fiber -The most powerful fiber

Single-unit smooth muscle has no innervation.

Which of the following is involved in the relaxation of a muscle cell?

The functional unit of skeletal muscle is a(n) ____________________, and these units attach end-to-end to form a(n) ____________________.

Distinguish between twitch summation and motor recruitment in a skeletal muscle.

Muscular fatigue can be caused by

The larger the motor units within a muscle, the more precisely controlled the gradations of contraction.

Which statement is not true about cross bridges?

Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below: a.actin only b.myosin only c.actin and myosin d.troponin-tropomyosin complex e.actin, troponin, and tropomyosin f.actin, myosin, troponin, and tropomyosin -Has (Have) ATPase capacity

Anaerobic exercise is endurance-type exercise.

The functional unit of skeletal muscle is the myofibril.

Indicate which of the muscle proteins in skeletal muscle is associated with the item in question by writing the appropriate letters in the blanks using the answer code below: a.actin only b.myosin only c.actin and myosin d.troponin-tropomyosin complex e.actin, troponin, and tropomyosin f.actin, myosin, troponin, and tropomyosin -Found in the A band

Calcium that enters the cell during smooth muscle excitation binds with

Skeletal muscle fibers

During a(n) ____________________ isotonic contraction, the contraction resists the stretching of the muscle.

Energy sources available to form ATP in muscle fibers in the absence of oxygen include

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code: a.Slow-oxidative fiber b.Fast-oxidative fiber c.Fast-glycolytic fiber d.Slow-oxidative fiber and fast-oxidative fiber e.Fast-oxidative fiber and fast-glycolytic fiber f.Slow-oxidative fiber, fast-oxidative fiber and fast-glycolytic fiber -Contains considerable myoglobin

During a cross-bridge cycle in skeletal muscle,

Binding of ____ to myosin permits the cross-bridge to ____.

The T tubules