DMD Lesson 3

A fascicle surrounds:

• muscles

• muscle fibers

• myofibrils

• sarcomeres

A muscle fiber contains?

• fascicles

• muscles

• myofibrils

Which of the following is the largest?

• muscle fibers

• muscles

• fascicles

• myofibrils

myofibrils contain....

• muscle fibers

• muscles

• fascicles

• sarcomeres

The muscles in the human body that are connected to bones and aid in movement of the _________ are called skeletal muscles.

The muscles are connected to bones by _________________.

Within each of the skeletal muscles are bundles of muscle fibers. These bundles are called _______________.

Each skeletal muscle fiber contains many _________________, which are rod shaped and contains many sarcomeres (the functioning unit of muscle tissue.)

The actin of the outermost myofibril is connected to the cell membrane by a protein called __________________.