Question

1. which of the following are part of the process of inhalation? (choose all that apply) diaphragm returns to its dome - like shape diaphragm contracts downward into the abdomen intercostal muscles expand air pressure inside the lungs decreases

Explanation:

• The diaphragm returning to a dome shape is exhalation, not inhalation.
• During inhalation, the diaphragm contracts and moves downward, increasing thoracic volume.
• Intercostal muscles expand the ribcage, increasing chest space for inhalation.
• Increased thoracic volume lowers lung air pressure, pulling air in.

Answer:

• diaphragm contracts downward into the abdomen
• intercostal muscles expand
• air pressure inside the lungs decreases