Which of these are considered to be a a type of muscle in the muscular system?

• Skeletal

• Cardiac

• Rough

• Smooth

The property of all muscles that can be defined as the muscle tissue having a electric gradient which can reverse when stimulated is?

• Excitability

• Contraction

• Elongate

The property of all muscles that can be defined as the muscle tissue having the ability to contract or shorten is?

• Excitability

• Contraction

• Elongate

The property of all muscles that can be defined as the muscle tissue having the capacity to elongate or relax is?

• Excitability

• Contraction

• Elongate

The type of muscle that is voluntary and is composed of muscle fibers that are bound together in parallel bundles and that is usually described as striated is called?

• Smooth

• Skeletal

• Cardiac

The type of muscle that is involuntary and is found in the walls of internal organ such as the stomach, intestines, and blood vessels is called?

• Smooth

• Skeletal

• Cardiac

The type of muscle that is involuntary and is found in the heart and can also be described as striated is called?

• Smooth

• Skeletal

• Cardiac

Skeletal muscles consist of numerous _____________ that contain a bundle of _______________ which are composed of repeating contractile units called _____________?

• muscle fibers, sarcomeres, myofibrils

• sarcomeres, muscle fibers, myofibrils

• sarcomeres, myofibrils, muscle fibers

• muscle fibers, myofibrils, sarcomeres

The thin filament composed of protein in a myofibril is called?

• Actin

• Myosin

What is the first thing that must happen for a muscle to contract?

• Actin and Myosin slide past each other

• Calcium ions are released

• Action potential or a stimulus reaches a muscle fiber