Muscle Contraction

Muscle Contraction

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Which muscle contraction type requires no movement of the muscle?

Multiple Select

Which is an example of an isometric muscle contraction?

• Plank

• Wall sit

• Crucifix (in gymnastics)

Multiple Choice

How many isotonic muscle contraction types are there?

• 1

• 2

• 3

• 4

Multiple Choice

Which isotonic contraction type is where the muscle is lengthening?

• Concentric

• Eccentric

Multiple Choice

Which is an example of a concentric contraction?

• Plank

• Downward phase of a bicep curl

• Upward phase of a bicep curl

Fill in the Blanks

What is the term for the prime mover?

Multiple Choice

Muscles contract by......

• Pushing

• Pulling

Multiple Choice

Which looks to stabilize a joint during movement?

• Synergist

• Agonist

• Antagonist

• Fixator

Fill in the Blanks

What is the term for a muscle that assists in the movement of the agonist?

Multiple Choice

How many stages is the sliding filament theory?

• 1

• 2

• 3

• 4

• 5

Fill in the Blanks

Myosin is one of the contractile proteins in the sliding filament theory - name the other one.

Multiple Choice

A nerve impulse starts the sliding filament theory.

• True

• False

Fill in the Blanks

What is bound to the head of actin to prevent myosin from binding to it?

Fill in the Blanks

What does the sarcoplasmic reticulum release to remove troponin and expose the binding site?

Fill in the Blanks

When actin and myosin join together, what is this known as?

Multiple Choice

Which disappears as muscle shortens?

• Z line

• H Zone

• H line

• Z Zone

Multiple Choice

What is the energy source required to allow actin and myosin to consistently attach and reattach (contract)?

• ADP

• ATP

• PAD

• TAP

Fill in the Blanks

To end the contraction, what needs to be removed from the sarcomere?

Multiple Choice

Which will reattach to actin to prevent the crossbridge?

• Sarcomere

• Sarcoplasmic Reticulum

• Calcium

• Tropomyosin