Exam 8: Muscle Physiology

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 under voluntary control.

The light and dark bands of a sarcomere are generated by the overlap of:

Multiunit smooth muscle

Sarcomeres are arranged end to end as

Increasing the number of recruited motor units in a muscle increases its force or strength of contraction.

Loss of coordination and balance, but not paralysis is associated with:

Indicate which characteristic applies to which type of muscle. -Length changes.

The noncontractile tissues are referred to as the ___________.

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

____________________ is the pigment that can store small amounts of oxygen in the skeletal muscle.

Energy sources available to form ATP in muscle fibers are below. Which statement is correct? 1. phosphorylation of ADP by creatine phosphate 2. oxidative phosphorylation of ADP in the mitochondria 3. phosphorylation of ADP by the glycolytic pathway in the cytosol

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: -Contains gap junctions.

Indicate the characteristics of the muscle-tension receptors using the following answer code: -Is involved in negative feedback.

The only energy source that can be used directly by the contractile machinery of a muscle fiber is ____________________.

The H zone of the sarcomere consists of myosin but does not contain actin.

If a skeletal muscle is lengthened significantly beyond its resting length:

Single-unit smooth muscle has no innervation.

Which of the following is involved in the process of muscle relaxation

During an isotonic contraction of a muscle in the arm

A functional syncytium