Skeletal Muscle Physiology on the Organismal Level (A&P)

What is a skeletal muscle's insertion?

• The moveable end of the muscle

• —The end of the muscle attached to a fixed (stabilized) bone

• The location where the muscle enters bone tissue

• The point where a muscle starts its development

—The moveable end of the muscle (insertion) attaches to the bone being _

• Pulled

• Pushed

• It depends on the skeletal muscle

What is a skeletal muscle's origin?

• The moveable end of the muscle

• —The end of the muscle attached to a fixed (stabilized) bone

• The location where the muscle enters bone tissue

• The point where a muscle starts its development

_ contraction occurs when skeletal muscles shorten, causing bones to be pulled

• Isotonic

• Isometric

• Hypotonic

• Hypertonic

• Isotropic

_ contraction occurs when skeletal muscles stay the same length, causing bones to stay in the same position

• Isotonic

• Isometric

• Hypotonic

• Hypertonic

• Isotropic

What are prime movers?

• The major skeletal muscles causing movement

• Skeletal muscles that assist the agonist in movement

• Skeletal muscles that cause opposite movements in comparison to agonists

• Skeletal muscles that are not involved in a given movement

• Smooth and cardiac muscles that assist skeletal muscles in pulling bones

What are synergists?

• The major skeletal muscles causing movement

• Skeletal muscles that assist the agonist in movement

• Skeletal muscles that cause opposite movements in comparison to agonists

• Skeletal muscles that are not involved in a given movement

• Smooth and cardiac muscles that assist skeletal muscles in pulling bones

What are antagonists?

• The major skeletal muscles causing movement

• Skeletal muscles that assist the agonist in movement

• Skeletal muscles that cause opposite movements in comparison to agonists

• Skeletal muscles that are not involved in a given movement

• Smooth and cardiac muscles that assist skeletal muscles in pulling bones

Motor units contain _ muscle fiber(s)

• One

• Many

Motor units contain _ motor neuron(s)

• One

• Many