Anatomy & Physiology - (Muscle Contraction & Pairs) L3

What does the shortening of the entire muscle fiber lead to?

• Relaxation

• Movement

• Stiffness

• Fatigue

What is the function of a synergist muscle?

• It prevents unwanted movement.

• It works with the agonists to direct and control movement.

• It is the prime mover that contracts.

• It relaxes to allow the agonist to move.

During a triceps extension, which muscle acts as the agonist?

• Biceps

• Triceps

• Deltoid

• Quadriceps

In cycling, which muscles are primarily responsible for the downward pedal stroke?

• Quads, calf

• Hamstrings, shin muscle

• Back & Abs

• Other leg muscles

Which muscles help stabilize the body during cycling?

• Quads, calf

• Hamstrings, shin muscle

• Back & Abs

• Other leg muscles

Which type of muscle contraction involves the muscle fibers lengthening to lower a resistance?

• Concentric

• Eccentric

• Isometric

• Dynamic

Which type of contraction is described as static?

• Concentric

• Eccentric

• Isometric

• Dynamic

What is the role of an agonist in muscle movement?

• Opposes the main movement

• Stabilizes the joint

• Assists the main movement

• Produces the main movement

What is the function of a fixator in muscle movement?

• Produces the main movement

• Opposes the main movement

• Stabilizes the joint

• Assists the main movement

Which type of muscle fiber is known for fast contraction speed?

• Type 1

• Type 2A

• Type 2B

• Type 3