Fibrin fragments join into a mesh that traps platelets and red blood cells which forms a clot. The clot seals off the ruptured area until it can repair itself. Then the clot is dissolved by another protein called plasmin. Discuss the process of exhalation during negative pressure breathing. Describe the forces that result in exhalation, the changes that occur in the thoracic cavity, the muscle groups that are involved, and the stimuli that result in this process.
Inhalation is the passive stage of negative pressure breathing.
As a result, these muscles realx. As the volume of the thoracic cavity decreases, the pressure of the air in the thoracic cavity increases. Now the air in the lungs is at a higher pressure than in the outside air.