Muscles, structure, function, sliding filament theory

What is the opposing muscle group for the biceps?

Which number represents the sarcomere?

• 1

• 2

• 3

• 4

The contractile unit of a muscle:

• sarcomere

• motor unit

• fascicle

• myofibril

Heart muscles

• Cardiac Muscle

• Skeletal Muscle

• Smooth Muscle

• Striated Muscle

What type of muscle tissue is this?

• cardiac

• smooth

• skeletal

• all the above

Individual parallel muscle fibers

• myofibrils

• myofilaments

___are the thin filaments in a sarcomere.

• troponin

• tropomyosin

• actin

• myosin

Muscles that appear "striped"

• Smooth Muscle

• Striated Muscle

"Light" myofilaments

• actin

• myosin

Where are the actin and myosin filaments in every one of your muscle fibers located?

• endomysium

• perimysium

• Epimysium

• Sarcomere