Human nose in profile

Human nose from front

Elephants have prehensile noses

Dogs have very sensitive noses

Anatomically, a nose is a protuberance in vertebrates that houses the nostrils, or nares, which admit and expel air for respiration in conjunction with the mouth. Elephants ( family: Elephantidae) are large land Mammals of the order Proboscidea. Prehensility or Prehensile is the quality of an Appendage or organ that has adapted for grasping or holding The dog ( Canis lupus familiaris) is a domesticated Subspecies of the gray wolf, a Mammal of the Canidae family of the order Vertebrates are members of the Subphylum Vertebrata, Chordates with backbones or spinal columns The grouping sometimes includes In Animal physiology, respiration is the transport of Oxygen from the outside air to the cells within tissues and the transport of Carbon dioxide The mouth, buccal cavity, or oral cavity is the first portion of the Alimentary canal that receives food and begins digestion by mechanically breaking up

In most animals, it also has the nosehairs, which catch air-borne particles and prevent them from reaching the lungs. Nasal hair or Nose hair is the Hair in the Nose. Adult humans have hairs in the anterior Nasal passage. Within and behind the nose is the olfactory mucosa and the sinuses. The olfactory mucosa is an organ made up of the Olfactory epithelium and the Lamina propria, or Mucus secreting Glands behind the epithelium Paranasal sinuses are air-filled spaces communicating with the nasal cavity within the bones of the Skull and face Behind the nasal cavity, air next passes through the pharynx, shared with the digestive system, and then into the rest of the respiratory system. The nasal cavity (or nasal fossa) is a large air-filled space above and behind the nose in the middle of the face The pharynx (plural pharynges) is the part of the Neck and Throat situated immediately Posterior to (behind the Mouth and Nasal In living organisms a respiratory system functions to allow Gas exchange. In humans, the nose is located centrally on the face; on most other mammals, it is on the upper tip of the snout. Mammals ( class Mammalia) are a class of Vertebrate Animals characterized by the presence of Sweat glands, including sweat glands A snout is the protruding portion of an animal's face consisting of its nose mouth and jaw

As an interface between the body and the external world, the nose and associated structures frequently perform additional functions concerned with conditioning entering air (for instance, by warming and/or humidifying it, also for flicking if moving and by mostly reclaiming moisture from the air before it is exhaled (as occurs most efficiently in camels). Camels are Even-toed ungulates within the Genus Camelus. The Dromedary, one-humped or Arabian camel has a single hump and the

In most fish, the nose is the primary large organ for smelling. Olfaction (also known as olfactics or smell) refers to the Sense of smell. As the animal sniffs, the air flows through the nose and over structures called turbinates in the nasal cavity. In Anatomy, a turbinate (or nasal concha) is a long narrow and curled bone shelf (shaped like an elongated sea-shell which protrudes into the breathing passage The turbulence caused by this disruption slows the air and directs it toward the olfactory epithelium. The olfactory epithelium is a specialized epithelial tissue inside the Nasal cavity that is involved in smell. At the surface of the olfactory epithelium, odor molecules carried by the air contact olfactory receptor neurons which transduce the features of the molecule into non painful electrical impulses in the brain. An olfactory receptor neuron also called an olfactory sensory neuron is the primary transduction cell in the Olfactory system. The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain

In cetaceans, the nose has been reduced to the nostrils, which have migrated to the top of the head, producing a more streamlined body shape and the ability to breathe while mostly submerged. The Order Cetacea (sɪˈteɪʃiə L cetus, whale includes Whales Dolphins and Porpoises Cetus is Conversely, the elephant's nose has become elaborated into a long, muscular, manipulative organ called the trunk. Elephants ( family: Elephantidae) are large land Mammals of the order Proboscidea.

See also

• Rhinarium — the wet, naked surface around the nostrils in most mammals, absent in haplorrhine primates such as humans
• Human nose
• Nasal bridge
• Nose-picking