The Muscular System

Front

What is an isometric contraction?

Back

An isometric contraction is a type of muscle contraction where the muscle exerts force without changing its length. An example is holding a wall sit.

Front

What is the origin of a muscle?

Back

The origin of a muscle is the end that does not move when the muscle contracts.

Front

What disease is caused by the toxin clostridium tetani?

Back

The disease caused by the toxin clostridium tetani is Tetanus.

Front

What type of lever is used when raising the chin off the chest?

Back

Raising the chin off the chest is an example of a first class lever.

Front

What is muscle fatigue?

Back

Muscle fatigue is the condition when muscles are unable to contract effectively due to prolonged activity.

Front

What is the role of skeletal muscles?

Back

Skeletal muscles are responsible for voluntary movements and are attached to bones.

Front

What is the difference between isotonic and isometric contractions?

Back

Isotonic contractions involve muscle shortening and movement, while isometric contractions involve muscle tension without movement.

Front

What is muscular dystrophy?

Back

Muscular dystrophy is a group of genetic diseases that cause progressive weakness and loss of muscle mass.

Front

What is the function of tendons?

Back

Tendons connect muscles to bones, allowing for movement when muscles contract.

Front

What is the role of the diaphragm in the muscular system?

Back

The diaphragm is a muscle that plays a crucial role in breathing by contracting and relaxing to change the volume of the thoracic cavity.