Exam 9: Muscular System

Knowing the relationship between the main actions of the rectus femoris muscle and the biceps femoris muscle, they can be described as ________.

As a person is vigorously rowing a boat, they suddenly experience extreme pain in their upper arm and no longer can extend at the elbow joint. Which of the following is probably the injured muscle?

During strenuous exercise, muscles may not be supplied with enough oxygen, causing a shift in metabolism resulting in the breakdown of pyruvic acid to lactic acid. This change in metabolism is called the

Myofibrils are composed primarily of

During muscle contraction, ATP supplies energy for

When a muscle undergoes atrophy in response to disuse

The functional unit of muscle contraction is

The enzyme ATPase occurs in the globular portion of myosin molecules.