Muscles

The Light I Band consists of... 

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

The functional unit of the muscle cell is the: 

• Sarcomere
• Osteon
• Myofilament
• Muscle fiber

The thick filament is composed of: 

• Myosin
• Actin

Fill-in-the-blank! Muscle, Fascicle, _____, Myofibril

• Muscle fiber
• Myofilament
• Sarcomere
• Actin 

The thin filament is composed of: 

• Myosin
• Actin

Actin filaments bound to the edges of the sarcomere, in zig zag structures also known as the...

• M-Line
• H-Zone
• Z-Disc
• A-Band

The ________ functions in storing Ca². 

• Sarcoplasmic Reticulum
• T Tubules
• Mitochondria
• Fascicle

covers the actin and prevents the myosin head to attach to the actin (rope or strand shape). 

• tropomyosin
• Myosin and actin
• Calcium and Oxygen
• Glycogen and hemoglobin

connective tissues covering or over coating the entire superficial part of the muscle ?

• endomysium
• epimysium
• perimysium
• none of the above

Which of the following muscle types is involve in peristalsis and not striated?!

• Smooth
• Skeletal 
• Cardiac
• All of the above are striated