Exam 8: Muscle Physiology

Both multiunit and single-unit smooth muscle are under motor control from the autonomic nervous system.

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Is innervated by motor neurons.

Slow-oxidative muscle fibers would be found in high density in the leg muscles of Olympic sprinters.

MATCHING 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: -Found in thin filament.

Of the step in excitation-contraction below, which occurs before the others?

During excitation-contraction coupling,

Which of the following statements concerning cross bridges is not correct? Cross bridges

The metabolic capability of a muscle fiber can affect the degree of tension it can develop.

Which of the following muscle types are myogenic?

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Is found in the heart.

MATCHING 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: -Lie(s) near the groove of the thin filament helix.

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Is found in the walls of hollow organs such as the stomach.

In smooth muscle, Ca²? binds with the protein ____________________, which is structurally similar to troponin.

The Z line of the sarcomere is characterized by

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code (more than one answer may apply): -Has the largest diameter.

Muscle fibers develop tension by

MATCHING 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: -Posses cross bridges.

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Has a clear-cut length-tension relationship.

Which type of muscle contains the most actin?

Indicate which characteristic applies to which type of muscle. -Muscle tension exceeds the load.