Exam 24: The Muscular System

-As aging occurs, muscle contractions ____.

The ________ muscle in the heart produces the atrial and ventricular contractions that pump blood into and through the blood vessels.

One function of muscles is to hold the bones tightly together in order to ________ the joints.

Most of the sarcoplasm is filled with long structures called ________, which produce the striations observed in skeletal and cardiac muscle cells.

The muscular disorder that usually occurs after a sports-related activity resulting in injury to the muscle tendon or tendon-to-bone attachment is ________.

When muscles contract, they produce ________, which helps the body maintain a normal temperature.

Myocytes are called muscle ________ because of their long lengths.

Elysia is a young woman who has just been diagnosed with fibromyalgia. The practitioner asks the medical assistant to provide her with tips to help manage this disorder. The medical assistant should suggest that she ____.

Skeletal muscle fibers respond only to the neurotransmitter ________, which causes them to contract.

The ________ muscle is represented by number 4 in the figure.

The biceps brachii attaches to two places on the scapula and to one site on the radius. When the biceps brachii contracts, the radius moves and the arm bends at the elbow. The ________ site of the biceps brachii is its attachment site on the radius.

Which of the following is a protein that stores phosphate groups for use by ATP?

The ________ muscle is located at number 5 in the figure.

A valve-like structure around a body opening and passage that controls the movement of substances into and out of the passages is called a(n) ________.

-The number 5 on the figure demonstrates ____.

Which type of muscle moves contents through hollow organs such as the intestines?

In addition to responding to neurotransmitters, muscle fibers in visceral smooth muscle stimulate each other to contract, causing them to contract and relax together and producing an action called ________.

When muscles have a buildup of lactic acid, this ____.

Which of these muscles flexes the foot and is commonly called the calf muscle?

Most of the sarcoplasm is filled with long structures called myofibrils whose filaments produce the ________ observed in skeletal and cardiac muscle cells.