Dictionary

                                                         
                                                                Vocabulary

• Neurotransmitters: A substance that is released at the end of nerve fiber due to an action potential that is triggered. This causes the impulse to go from one nerve to another nerve.

         Norepinephrine is a type of neurotransmitter that is released in the brain.

• Phytohormones: Plant hormones that regulates their growth. 

      Phytohormones occur in plants when there are extremely low concentrations. 

• Actin: A protein that is found in eukaryotic cells to help muscles contract along with myosin.

          There are two types of actin, F-actin and G-actin.

                               



                                                                     Work Cited:

http://www.ncbi.nlm.nih.gov/books/NBK10957/

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