Muscles

Front

Most of the skeletal muscles in the body are ________ muscles.

Back

parallel

Front

Each of the following muscles is involved in the process of chewing or manipulating food in the mouth except the ________.

Back

omohyoid.

Front

Which of the following is not primarily a muscle of facial expression?

Back

masseter.

Front

The end of a muscle that remains stationary when the muscle contracts is called the ________.

Back

origin.

Front

Put the following events of the contraction cycle in the order in which they occur: 1. Cross-bridge detachment, 2. Cross-bridge formation, 3. Active site exposure, 4. Myosin reactivation, 5. Calcium ions bind troponin, 6. Myosin head pivoting.

Back

5,3,2,6,1,4

Front

What is the primary function of skeletal muscles?

Back

To facilitate movement by contracting and exerting force on bones.

Front

Define 'agonist' in muscle terminology.

Back

An agonist is a muscle that is primarily responsible for a specific movement.

Front

What is the role of the 'antagonist' muscle?

Back

An antagonist muscle opposes the action of the agonist, helping to control movement.

Front

Explain the term 'isometric contraction'.

Back

An isometric contraction occurs when muscle tension increases but the muscle does not change length.

Front

What is the difference between 'origin' and 'insertion' in muscle anatomy?

Back

The origin is the fixed attachment point of a muscle, while the insertion is the movable attachment point.