Skeletal Muscle Organization AP I

Which type of muscle tissue connects bones to other bones, allowing for movement of our joints?

• cardiac

• smooth

• skeletal

• sympathetic

Muscle cells are filled with long cylinders called ...

• sarcomeres

• myofibrils

• fascicles

• fascia

Structure B is known as the thin filaments of the sarcomere, what is another name for the thin filaments?

• myosin

• actin

• fascia

• myofibril

Which part of a sarcomere contains only thin filaments?

• I band

• A band

• H zone

• M zone

Which part of a sarcomere contains only thick filaments?

• I band

• A band

• H zone

• Z line

What is labeled "2" (the yellow part) in the diagram?

• sarcolemma

• sarcoplasmic reticulum

• transverse (T) tubules

• myofibril

A layer of thickened connective tissue that covers the entire muscle and is located over the layer of epimysium.

• endomysium

• fascia

• perimysium

• sarcomysium

A group of myofilaments is a _____________.

• fascicle

• muscle fiber

• myofibril

• tendon

Structure C is known as the thick filament of the sarcomere, it is also known as

• myosin

• actin

• fascia

• myofibrils

Which of the following marks the end of a sarcomere?

• H zone

• Z disc

• M line

• A band