Skeletal Muscles

The functional unit of the muscle cell is the: 

• Sarcomere

• Osteon

• Myofilament

• Muscle fiber

The thick 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

What two chemicals are necessary for muscle contraction to occur?

• Niacin and Potassium

• Calcium and ATP

• Sodium and Potassium

• Ach and Potassium

The neurotransmitter that signals muscle contraction is called...

• Acetylcholine

• Myosin

• Actin

• Calcium

name the muscle

• Rectus Femoris

• Biceps femoris

• Semimembranosus

• Semitendinosus

name the muscle

• Vastus Medialis

• Vastus Intermedius

• Rectus Femoris

• Vastus Lateralis

name the muscle

• Vastus Medialis

• Vastus Intermedius

• Rectus Femoris

• Vastus Lateralis

name the muscle

• achilles

• Gastrocnemius

• Anterior crus

• Soleus

What type of muscle are the biceps and triceps that are located in your upper arm?

• skeletal

• cardiac

• smooth

• involuntary