Question

lo 4.5. which type of muscle is responsible for involuntary movement?
skeletal
fast - twitch
cardiac
striated
smooth

Explanation:

Skeletal and striated muscles are mainly for voluntary movement. Fast - twitch is a type of skeletal muscle fiber related to quick contractions in voluntary actions. Cardiac muscle is responsible for the involuntary beating of the heart. Smooth muscle controls involuntary functions like the movement of substances through the digestive tract and blood vessel constriction. Both cardiac and smooth muscles are involuntary.

Answer:

C. Cardiac, E. Smooth