HBS 2.1 new

Front

What are the three types of muscles?

Back

Skeletal, smooth, and cardiac.

Front

What type of tissue lines the internal organs and covers the outside of the body?

Back

Epithelial tissue.

Front

What is the term for the myosin head binding with the actin molecule?

Back

Cross bridge formation.

Front

What is the purpose of the power stroke in muscle contraction?

Back

To slide the filaments forward.

Front

How many attachments must muscles have according to Muscle Rule 1?

Back

At least 2 attachments.

Front

What is skeletal muscle?

Back

A type of muscle that is under voluntary control and is responsible for moving bones.

Front

What is smooth muscle?

Back

Involuntary muscle found in internal organs, responsible for movements such as digestion.

Front

What is cardiac muscle?

Back

Involuntary muscle found only in the heart, responsible for pumping blood.

Front

Define muscle contraction.

Back

The process where muscle fibers shorten and generate force.

Front

What is the role of tropomyosin in muscle contraction?

Back

It blocks the binding sites on actin, preventing contraction until calcium ions are present.