Chegg please help in detail .. Thank you for your time & patience For question #

Question

Chegg please help in detail ..
Thank you for your time & patience
For question #1 I noticed the balloons deflated
For question #2 the balloons inflated
Procedure 1 Model Ventilation with the Bell-Jar Model In this procedure we will use a bell-jar model of the lungs, shown in Figure 13.7, to view the effects of pressure and volume on ventilation. The belljar model has two balloons, each representing one lung. and a flexible membrane on the bottom that represents the diaphragm. Apply upward pressure to the diaphragm. This represents how the diaphragm of the system (has it increased or decreased)? What happened to the volume of the lungs? 1 looks when it is relaxed. What has happened to the pressure 2 Now slowly release the diaphragm. This represents the diaphragm flattening out as it contracts. What is happening to the pressure as you release the diaphragm? What happened to the volume of the lungs FIGURE 13.7 Bell-jar model of the lungs, simulated inspiration 3 If your bell-jar model has a rubber stopper in the top, you can use it to demonstrate the effects of a pneum you can use it to demonstrate the effects of a pneumothorax (noo-muh-THOHR-ax) on lung tissue. A pneumothorax gencrally is caused by a tear in the pleural membranes that allows air to enter the pleural cavity. With the diaphragm flat and the lungs (balloons) inflated, loosen the rubber stopper. What happens to the lungs? Why? 13

Explanation / Answer

1. Diaphragm relaxes during expiration. As during expiration volume of the system decreases, so it's pressure will increase. The volume of the lungs will decrease And it will shrink.

2. Diaphragm contracts during inspiration. As during inspiration volume of the system increases, so its pressure will decrease. The volume of the lungs will increase and it will fully inflate.

3.pneumothorax condition is caused due to built up of air, which increases the pressure on lungs and causes it to collapse.

When the rubber stopper is loosened, it releases the air from inside of the system due to which the pressure on baloons (lungs) decreases, which causes the balloons to deflate.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.