The answer that would best complete the given statement above would be the second option: MUSCLES. Contractile proteins are found in muscles. <span>The muscles themselves contain muscle fibers, each of which contains cylindrical strands of </span>contractile proteins <span>called myofibrils. Hope this answers your question.</span>
It is true that the potential must be strong enough to send
a potential to the CNS. The stronger the potential, the more it will excite the
transmitter in relaying the message to another neuron, therefore, if this
happens, the more will it be easier to pass the message.
Answer:
There is coral and algea.
Explanation: