Muscular

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

Hint: One type is attached to bones, one lines internal organs, and one is found only in the heart.

Which type of muscle is under voluntary (conscious) control?

Hint: You decide when to move your arm or leg using this type of muscle.

What type of muscle is found only in the heart?

Hint: 'Cardiac' comes from the Greek word for heart.

What type of muscle is found in the walls of organs like the stomach, intestines, and blood vessels?

Hint: It works automatically without you thinking about it and looks smooth under a microscope.

What tough, cord-like tissue connects muscles to bones?

Hint: You can feel a large one at the back of your ankle (the Achilles tendon).

What tissue connects bones to other bones at a joint?

Hint: They hold joints together and can be sprained if stretched too far.

What does it mean that muscles can only pull and not push?

Hint: The bicep bends your arm, and the tricep straightens it. They work as opposites.

What is the difference between voluntary and involuntary muscle movement?

Hint: You choose to raise your hand, but your heart beats on its own.

Approximately how many skeletal muscles are in the human body?

Hint: There are many more muscles than bones (206).

When you bend your arm at the elbow, which muscle contracts?

Hint: It is on the front of your upper arm and bulges when you 'make a muscle.'

What is the name for a pair of muscles that work in opposite directions to move a joint?

Hint: When one contracts, the other relaxes. The bicep and tricep are an example.

Is cardiac muscle voluntary or involuntary?

Hint: You do not have to think about making your heart beat.