The human nose anatomy refers to the structure of the nose, which is essential for breathing, smelling, and filtering air. It consists of both external and internal parts. Externally, the nose includes the nasal bridge, nostrils, and nasal tip, which help direct air into the nasal passages. Internally, the nasal cavity is lined with mucous membranes and cilia that filter, warm, and humidify the air before it reaches the lungs. The olfactory region at the top of the nasal cavity detects smells, sending signals to the brain. The sinuses, air-filled spaces within the skull, are connected to the nose and help with voice resonance and reducing the weight of the head. The nose plays a critical role in respiratory health and sensory perception.