audri11
contestada

Select the correct answer.
Which of the following describes that happens when inspiration occurs?
A. The diaphragm relaxes, increasing the size of the chest cavity.
B. Air moves out of the lungs.
C. The intrathoracic pressure decreases.
D. All of the above

Respuesta :

inelson18

Answer:

C. The intrathoracic pressure decreases.

Explanation:

Inspiration is when air is moved into the  lungs. This occurs when:

  • The diaphragm contracts, which  increases the size of the chest  cavity.
  • Then the lungs expand, which  decreases intrathoracic pressure,  causing air to rush into the lungs.

Otras preguntas