Final answer:
The Duval / Lovelace Forceps are used in surgical procedures to carefully grasp and hold delicate lung tissue, ensuring the maintenance of negative pressure in the chest cavity which is crucial for lung function.
Step-by-step explanation:
The question relates to the use of Duval / Lovelace Forceps in medical procedures, particularly for grasping lung tissue. These forceps are designed to handle delicate tissues, such as lung tissue, during surgical operations. A similar principle applies to various insects and mechanisms that use adhesion or suction, like mosquitoes and other insects that suck up liquid food. The reference to gauge pressure and the maintenance of negative pressure within the chest cavity to prevent lung collapse is indicative of the complexities involved in thoracic surgery and the importance of using specialized surgical instruments like the Duval / Lovelace Forceps.