Muscular System Test Review

Front

What is an individual cell of muscle called?

Back

Fiber

Front

What is the name of the large posterior muscle that can be seen anteriorly above the shoulder?

Back

Trapezius

Front

Which muscle is responsible for closing the eyelids?

Back

Orbicularis oculi

Front

What neurotransmitter is used for muscle contraction?

Back

Acetylcholine

Front

What type of muscle is found in the heart?

Back

Cardiac muscle

Front

What are the three types of muscle tissue in the human body?

Back

Skeletal, Cardiac, and Smooth muscle.

Front

What is the primary function of skeletal muscle?

Back

To facilitate movement of the skeleton.

Front

What is the role of acetylcholine in muscle contraction?

Back

It transmits nerve impulses to muscle fibers, causing them to contract.

Front

What type of muscle is involuntary and found in the walls of hollow organs?

Back

Smooth muscle.

Front

What is the difference between voluntary and involuntary muscles?

Back

Voluntary muscles are controlled consciously (e.g., skeletal muscles), while involuntary muscles operate without conscious control (e.g., cardiac and smooth muscles).