According to the Merck Manual Home Health Handbook, the human nose is made of bone, cartilage, skin and mucus membranes. The bone and cartilage provide the structure of the nose. The mucus membranes line the inside of the nose, and skin covers the outside.
The two nostrils of the nose are separated by the septum, which is made of both bone and cartilage, states KidsHealth. According to the Merck Manual Home Health Handbook, the outer structure of the nose is formed by bone on the top part of the nose and cartilage on the lower part towards the tip of the nose.
The hollow part of the nose is referred to as the nasal cavity and is lined with a mucus membrane, states the Merck Manual Home Health Handbook. This membrane helps remove dirt particles from the air being breathed.