Sacromere and Extra practice

The contractile unit of the _____ that lies from
______

Dark portions of the striations containing myosin and over lapping actin

Light portions of the striations containing actin only  

Dark portions of the striations containing myosin only

Proteins that are attached to myosin

Are attached to the ______

The connective tissue sheath that envelops bundles of muscle fibers is the:

Groups of skeletal muscle fibers are bound together by a connective tissue envelope called the:

_____ is the space between each myosin filament.

Each sarcoplasm contains numerous

A ______ is the point where actin fillaments are anchored to each other.

Tendons attach bone to bone
True False

The basic functional unit of a skeletal muscle are composed of actin
True False

The thick myofilaments in a skeletal muscle are composed of actin
True False

Sarcomeres are seperated from each other by dark bands called myofilaments
True False

There are more than 600 muscles in the body
True False

Muscle cells and muscle fibers are interchangeable terms
True False