Anatomy of a Muscle Tissue

A sarcomere is

• A protein filament or fiber
• The basic contractile unit of muscle contraction
• An organelle
• An organ

Area #1 is known as a -

• perimysium

• epimysium

• muscle fiber

• fascicle

Area #3 is called the

• perimysium

• epimysium

• muscle fiber

• fascicle

Area #2 is called the -

• endomysium

• perimysium

• epimysium

• olomysium

Area #4 is called the -

• epimysium

• perimysium

• endomysium

• muscle fiber

Area #5 is called the -

• muscle fiber

• epimysium

• perimysium

• fascicle

Which of the following is NOT a characteristic of skeletal muscles?

• striated

• involuntary

• voluntary

• multinucleated

The Light I Band consists of... 

• Myosin filaments only
• Actin filaments only
• Myosin and actin filaments
• none of the above

The thick filament is composed of: 

• Myosin
• Actin

The thin filament is composed of: 

• Myosin
• Actin