Q: What basic structures of the nervous system innervate the muscles of the respiratory system and are responsible for controlling and regulating pulmonary ventilation? Choices: - toxins - enzymes - ions - neurons A:
neurons

Q: In many polychaetes, the parapodia are richly supplied with blood vessels and also function as what? Choices: - tails - pores - scales - gills A:
gills

Q: What is the largest level of organization? Choices: - organelle - genome - protein - organism A:
organism

Q: Which system of the body is responsible for bringing air into the body? Choices: - vascular system - excretory system - digestive system - respiratory system A:
respiratory system