during chest radiography the act of inspiration depresses the abdominal viscera

during chest radiography the act of inspiration:

• 1- elevates the diaphragm
• 2- raises the ribs
• 3- depresses the abdominal viscera
• a. 1 only
• b.1 and  2 only
• c.2and 3 only
• d . 1,2 and 3

elevate the abdominal viscera:

That's not correct. During chest radiography, the act of inspiration elevates the abdominal viscera. This is because when the diaphragm contracts during inspiration, it moves downward, which pushes the abdominal viscera down and away from the heart and lungs. This allows for better visualization of the heart and lungs on the chest X-ray.

Diaphragm contraction:

When a patient takes a deep breath in during chest radiography, the diaphragm contracts and moves downward. This pushes the abdominal viscera down and away from the heart and lungs, which makes it easier to see the heart and lungs on the X-ray.

If the patient does not take a deep breath in, the diaphragm will not be fully contracted and the abdominal viscera will not be pushed down as far. This can make it more difficult to see the heart and lungs on the X-ray.

Chest X-ray:

In some cases, the patient may be asked to lie on their side or stomach for the chest X-ray. This can help to move the abdominal viscera away from the heart and lungs, which can also make it easier to see the heart and lungs on the X-ray.