Which of the following statements about neurotransmitters is true? . a. they're stored in synaptic vesicles in the axon. b. the effect of acetylcholine on the heart muscles is excitatory. c. the peripheral nervous system has a wider variety of neurotransmitters than the central nervous system. d. most are produced in the cytoplasm of the dendrite and migrate to the axon.

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.