Muscle Contraction

​MUSCLE CONTRACTION

Multiple Choice

Why would muscle tissues have tons of mitochondria?

• to create tons of energy!

• muscles never quit working

• to complete the Krebs Cycle

• All of these!

Match

Match the following:

• Myosin

• Actin

• Myofibrils

Thick fibers

Thin fibers

Muscle fibers

• Thick fibers

• Thin fibers

• Muscle fibers

Multiple Choice

Which neurotransmitter is mostly responsible for muscle contraction?

• Serotonin

• Tryptophan

• Acetylcholine

• Epinephrine