Question

Question 40 1 pts During an inspiratory effort... The intrapleural pressure increases The abdominal muscles contract The elastic recoil exceeds Plung The alveolar pressure drops below atmospheric pressure The external intercostal muscles relax

Answer 1

During an inspiratory effort the air needs to be inhaled and it is not a voluntary action that means it is performed even when the person intentionally do not inhale.

While inspiration the air pressure needs to be less than the atmospheric pressure so the air can easily move inside the lungs.

The external intercoastal muscles contract as the ribs move upward to allow the air for inhalation.

Elastic recoil is achieved by the lung to allow it to acquire its original shape after expiration as the air is released, so it does not take place during inspiratory effort.

So the correct option is that alveolar pressure drops below the atmospheric pressure.

All the remaining options do not tell about the process taking place during inspiratory effort.