👉 Nasalis is a part of the respiratory system that includes the nasal cavity, which is the outermost layer of the body and is primarily responsible for the breathing process. It plays a crucial role in maintaining homeostasis by regulating air pressure within the lungs, allowing for efficient oxygen exchange between the blood and the alveoli where gas exchange occurs. The primary function of the nasalis is to filter out foreign particles and gases from the respiratory tract before they can enter the bloodstream.