Respiration is controlled by the medulla oblongata and A)cerebellum. B)pons. C)hippocampus. D)hypothalamus. E)amygdala.
After a healthy newborn takes its first breath, A)the pressure in the thoracic cavity remains low. B)the rib cage returns to its fully compressed state. C)the diaphragm and the external intercostal muscles stay contracted. D)the alveoli stay open because of the presence of surfactant. E)the compliance of the lungs gradually decreases.
The DRG contains neurons that control the A)external oblique and internal intercostal muscles. B)rectus abdominis and external intercostal muscles. C)external intercostal muscles and diaphragm. D)internal intercostal muscles and diaphragm. E)internal oblique and internal intercostal muscles.
During forced breathing, which of the following occurs during inhalation? A)The diaphragm and external intercostal muscles relax. B)The DRG is inhibited. C)The expiratory center of the VRG is active. D)The inspiratory center of the VRG is inhibited. E)The expiratory center of the VRG is inhibited.