Answer the following question given this paragraph: Neurons that innervate the muscles of the respiratory system are responsible for controlling and regulating pulmonary ventilation. The major brain centers involved in pulmonary ventilation are the medulla oblongata and the pontine respiratory group (Figure 22.20). 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

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

Answer the following question given this paragraph: Levels of organization, from the atom (smallest) to the organism (largest). Notice that organelles are inside a cell, and organs are inside an organism. Q: What is the largest level of organization? Choices: - organelle - genome - protein - organism A:
organism

Answer the following question given this paragraph: We breathe because we need oxygen. Breathing also releases carbon dioxide from our bodies into the air. The respiratory system is the body system that brings air containing oxygen into the body and releases carbon dioxide into the atmosphere. Recall that oxygen is needed to make ATP. 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