Muscular System

Front

What is the Latissimus Dorsi?

Back

The Latissimus Dorsi is a large, flat muscle located on the back that helps in the movement of the shoulder and arm.

Front

What is the function of a Flexer muscle?

Back

A Flexer muscle shortens the joint, allowing for bending movements.

Front

What is the function of an Extender muscle?

Back

An Extender muscle lengthens the joint, allowing for straightening movements.

Front

What are the primary functions of the muscular system?

Back

The primary functions include movement, protection, producing body heat, and helping regulate temperature.

Front

What type of muscle fibers do marathon runners predominantly have?

Back

Marathon runners predominantly have a high number of Slow twitch fibers.

Front

What happens to muscles when they are not used, such as when in a cast?

Back

When muscles are not used, they can undergo Atrophy, which is the decrease in muscle size and strength.

Front

What is muscle Hypertrophy?

Back

Hypertrophy is the increase in muscle size and strength due to exercise and resistance training.

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 voluntary and involuntary muscles?

Back

Voluntary muscles are controlled consciously (e.g., skeletal muscles), while involuntary muscles operate automatically (e.g., cardiac and smooth muscles).

Front

What is the primary energy source for muscle contraction?

Back

The primary energy source for muscle contraction is ATP (adenosine triphosphate).