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The human nose is the first organ of the respiratory system. It is also the principal organ in the olfactory system. The shape of the nose is determined by the nasal bones and the nasal cartilages, including the nasal septum, which separates the nostrils and divides the nasal cavity into two. The nose has an important function in breathing.
Anatomical terminology. [ edit on Wikidata] A nose is a protuberance in vertebrates that houses the nostrils, or nares, which receive and expel air for respiration alongside the mouth. Behind the nose are the olfactory mucosa and the sinuses. Behind the nasal cavity, air next passes through the pharynx, shared with the digestive system, and ...
The head contains sensory organs: two eyes, two ears, a nose and tongue inside of the mouth. It also houses the brain. Together, these organs function as a processing center for the body by relaying sensory information to the brain. Humans can process information faster by having this central nerve cluster.
The nasolacrimal duct (also called the tear duct) carries tears from the lacrimal sac of the eye into the nasal cavity. The duct begins in the eye socket between the maxillary and lacrimal bones, from where it passes inferoposteriorly before opening into the inferior nasal meatus.
Anatomical terminology. [ edit on Wikidata] In anatomy, the orbit is the cavity or socket/hole of the skull in which the eye and its appendages are situated. "Orbit" can refer to the bony socket, [1] or it can also be used to imply the contents. [2]
The human eye is an organ of the sensory nervous system that reacts to visible light and allows the use of visual information for various purposes including seeing things, keeping balance, and maintaining circadian rhythm. Arizona Eye Model. "A" is accommodation in diopters. The eye can be considered as a living optical device.
The eyes, sitting in the orbit and protected by eyelids and eyelashes; The distinctive human nose shape, nostrils, and nasal septum; The cheeks, covering the maxilla and mandible (or jaw), the extremity of which is the chin; The mouth, with the upper lip divided by the philtrum, sometimes revealing the teeth
Sphenoid sinuses that are located behind the eyes and lie in the deeper recesses of the skull. Function. The function of the sinus cavities within the cranial bone (skull) is not entirely clear. Beliefs about their possible function include: Sinus cavities allow for voice resonance
Nasal bridge is the bony part of the nose, overlying the nasal bones, above the part in blue labeled "Cartilage of Septum". The bridge is between the eyes, and just below them. The lower half of the nose is below the bridge.
Dorsal nasal artery. Bloodvessels of the eyelids, front view. 1, supraorbital artery and supraorbital vein; 2, nasal artery; 3, angular artery, the terminal branch of 4, the facial artery; 5, suborbital artery; 6, anterior branch of the superficial temporal artery; 6’, malar branch of the transverse artery of the face; 7, lacrimal artery; 8 ...