The external nose External nose 1. Root of nose 2. Back of nose 2 3. Apex of nose 4 Alae of nasi 3 5. nostril 4 Nasal cavity communicate with the pharynx behind through the choanaeThe external nose External nose: 1. Root of nose 2. Back of nose 3. Apex of nose 4. Alae of nasi 5. Nostril 1 2 3 4 5 Nasal cavity communicate with the pharynx behind through the choanae