Match each neurobiology term with its corresponding description: Terms: 1. Neurotransmitter 2. Target neuron 3. Acetylcholine 4. Neuropeptide Descriptions: A. An endogenous chemical messenger that transmits signals across a synapse B. The postsynaptic cell that receives incoming chemical signals via specific receptors C. A classic neurotransmitter that plays a key role in muscle contraction and autonomic signaling D. A small protein-like molecule used by neurons to modulate and transmit neural signals

The matches reflect the slide content. A neurotransmitter carries a signal across a synapse; the target neuron receives it; acetylcholine is explicitly named; and neuropeptide appears alongside neurotransmitter in the presentation. The slides do not expand the neuropeptide definition, so the match is limited to its placement in the material.\n\n**Key takeaway:** Know the stated neurotransmitter definition and recognize the named related terms.\n\n**Glossary:** **Target neuron**: The receiving neuron; **neuropeptide**: A term presented alongside neurotransmitter in the slides.