a)👃 Review of Anatomy and physiology of nose 👃 Anatomy of the Nose-(Anatomy of nose) 1. External Nose (outside of the nose) Structure: Parts: Functions: 2. Nasal Cavity (Nasal Cavity) 3. Paranasal Sinuses (Paranasal sinuses) These are air-filled cavities that are located around the Nasal Cavity. They are as follows: Functions : 4. Blood Supply Richly supplied with blood by branches of the internal and external carotid arteries. Key Arteries