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The preorbital gland is a paired exocrine gland found in many species of hoofed animals, which is homologous to the lacrimal gland found in humans. These glands are trenchlike slits of dark blue to black, nearly bare skin extending from the medial canthus of each eye. They are lined by a combination of sebaceous and sudoriferous glands, and they produce secretions which contain pheromones and other semiochemical compounds. Ungulates frequently deposit these secretions on twigs and grass as a means of communication with other animals.

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  • The preorbital gland is a paired exocrine gland found in many species of hoofed animals, which is homologous to the lacrimal gland found in humans. These glands are trenchlike slits of dark blue to black, nearly bare skin extending from the medial canthus of each eye. They are lined by a combination of sebaceous and sudoriferous glands, and they produce secretions which contain pheromones and other semiochemical compounds. Ungulates frequently deposit these secretions on twigs and grass as a means of communication with other animals. The preorbital gland serves different roles in different species. Pheromone-containing secretions from the preorbital gland may serve to establish an animal's dominance (especially in preparation for breeding), mark its territory, or simply to produce a pleasurable sensation to the animal. Because of its critical role in scent marking, the preorbital gland is usually considered as a type of scent gland. A further function of these glands may be to produce antimicrobial compounds to fight against skin pathogens. Antimicrobial compounds found in these glands may be biosynthesized by the animal itself, or by microorganisms that live in these glands. (en)
  • A glândula pré-orbital é uma glândula exócrina par encontrada em muitas espécies de ungulados, homóloga à glândula lacrimal humana. Essas glândulas são fendas de cor azul a preta, perto de porções de pele nua se estendendo a partir do do olho. Ela é uma combinação de glândulas sebáceas e glândulas sudoríparas, e secreta feromônios e outros componentes. Ungulados frequentemente depositam essas secreções em galhos como forma de comunicar-se com outros animais. Essa glândula possui diferentes funções em diferentes espécies. Secreções contendo feromônios podem servir para estabelecer dominância, marcar território, ou simplesmente para produzir uma sensação agradável ao animal. Devido ao seu papel crucial na marcação de cheiro, ela é considerada uma . (pt)
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  • glandula praeorbitalis
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  • Subadult male red deer . The preorbital gland is closed in this photograph. (en)
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  • 30 (xsd:integer)
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  • Rothirsch Spießer Auge 2007-08-16 131.jpg (en)
dbp:latin
  • glandula praeorbitalis (en)
dbp:name
  • Preorbital gland (en)
dbp:nerve
  • lacrimal nerve, Zygomatic nerve via Communicating branch, greater petrosal nerve (en)
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  • 190 (xsd:integer)
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  • The preorbital gland is a paired exocrine gland found in many species of hoofed animals, which is homologous to the lacrimal gland found in humans. These glands are trenchlike slits of dark blue to black, nearly bare skin extending from the medial canthus of each eye. They are lined by a combination of sebaceous and sudoriferous glands, and they produce secretions which contain pheromones and other semiochemical compounds. Ungulates frequently deposit these secretions on twigs and grass as a means of communication with other animals. (en)
  • A glândula pré-orbital é uma glândula exócrina par encontrada em muitas espécies de ungulados, homóloga à glândula lacrimal humana. Essas glândulas são fendas de cor azul a preta, perto de porções de pele nua se estendendo a partir do do olho. Ela é uma combinação de glândulas sebáceas e glândulas sudoríparas, e secreta feromônios e outros componentes. Ungulados frequentemente depositam essas secreções em galhos como forma de comunicar-se com outros animais. (pt)
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  • Preorbital gland (en)
  • Glândula pré-orbital (pt)
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  • Preorbital gland (en)
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