Horn (anatomy) - Wikipedia
A horn is a permanent pointed projection on the head of various animals that consists of a covering of keratin and other proteins surrounding a core of live bone. Horns are distinct from antlers, which are not permanent.
Horns and Antlers - ADW
Horns are composed of a bony core covered with a sheath of keratin. Unlike antlers, horns are never branched, but they do vary from species to species in shape and size. The growth of horns is completely different from that of antlers. Neither the sheath nor the core are ever shed, and in many species, the horns never stop growing.
Horn (anatomy) - New World Encyclopedia
In zoology, a horn is one of a pair of hard, pointed, often permanent projections on the head of various hoofed mammals (ungulates) consisting of a core of living bone covered by a sheath of keratin and other proteins. Examples of animals with true horns include antelopes, cattle, buffalo, and goats. The term also is used to refer more ...
Horns and Antlers: What’s the Difference? - American Museum …
2016年8月31日 · Cranial appendages, or “headgear,” come in many different shapes and sizes. But while antlers and horns are similar, they have key differences—as do more obscure appendages like ossicones and pronghorns.
Horn | Unicorn, Rhinoceros & Antelope | Britannica
horn, in zoology, either of the pair of hard processes that grow from the upper portion of the head of many hoofed mammals. The term is also loosely applied to antlers and to similar structures present on certain lizards, birds, dinosaurs, and insects.
Horn (anatomy) - Simple English Wikipedia, the free encyclopedia
Horns are part of the body of some animals. They grow on the animal's head. They are projections (things that stick out) made of hard skin. The horn has a lot of keratin in it, the same protein that is in human hair and nails.
Horn - Anatomy & Physiology - WikiVet English
2023年1月9日 · Introduction. The keratin in the epidermis, when cornified and thickened, is referred to as horn. Horn is particulary resistant to mechanical and chemical damage. The dermis of horn gives the structures their 3-D structure and shape.
Horn (anatomy) - WikiMili, The Best Wikipedia Reader
A horn is a permanent pointed projection on the head of various animals that consists of a covering of keratin and other proteins surrounding a core of live bone. Horns are distinct from antlers, which are not permanent.
Horn (anatomy) explained - Everything Explained Today
Horn (anatomy) explained. A horn is a permanent pointed projection on the head of various animals that consists of a covering of keratin and other proteins surrounding a core of live bone. Horns are distinct from antlers, which are not permanent.
Horn (anatomy) - Detailed Pedia
A horn is a permanent pointed projection on the head of various animals that consists of a covering of keratin and other proteins surrounding a core of live bone. Horns are distinct from antlers, which are not permanent.