North American river otters, also called Canadian otters, have long, muscular, streamlined bodies with short legs and fully webbed feet bearing non-retractable claws. Their small heads widen to long necks and shoulders, and they have flattened, well-muscled tails. These otters have brown-to-gray fur, and their … See more The river otter's eyes and ears are located high on its head for surface swimming. A third eyelid, or nictitating membrane, protects the eye and allows the otter to see when swimming underwater. The otter's ears and … See more River otters have long, stiff and highly sensitive facial whiskers that aid in locating and capturing prey. The otters typically capture prey in their mouths but occasionally use … See more River otters are found throughout most of North America from the Rio Grande to Canada and Alaska, except for in arid deserts and the treeless Arctic. They live in riparian zones, often in the same areas as beavers. Their … See more Adult river otters weigh 10 to 33 pounds (4.5 to 15 kilograms) and are about 2.5 to 5 feet (76 to 152 centimeters) in length. Females are roughly … See more WebJan 1, 2009 · The skull acts as a mechanical foundation for the fat, muscle, skin, vascular, and sensory structures that form the head. Thus, the skull alone does not dictate the contours of the head (Fig. 1).For example, odontocete cetaceans have a melon, a fatty facial pad, the shape of which is only partly defined by the underlying bones (Harper et …
Eurasian Otter Facts, Lifespan & Habitat Study.com
WebAug 23, 2024 · We measured a substantially thick epidermis in sea otter glabrous skin that ranged from four to 260 times thicker than reported for the epidermis in haired skin obtained from the facial region of one sea otter (Kenyon, 1969) and haired skin obtained from the withers and breast of two Eurasian otters, Lutra lutra (Sokolov, 1982). WebThe cleaned sea otter skull, showing severe facial trauma. Note the large section of transected bone with teeth from the maxilla (A), multiple broken, transected and missing … scottish book trust katie bairdie audio
Facial muscles: Anatomy, function and clinical cases Kenhub
WebSea otters have webbed feet, water-repellent fur to keep them dry and warm, and nostrils and ears that close in the water. Sea otters often float at the water's surface, lying on their backs in a... WebApr 14, 2024 · Focusing on the lower face, we find a considerable collection of muscles that control the mouth, elevate the lip, and move the chin, all of which are bone-to-skin … WebJul 25, 2024 · The facial nerve: anatomy and associated disorders for oral health professionals. Odontology. 2024 Apr; 106 (2):103-116. [PubMed: 29243182] 2. Phillips CD, Bubash LA. The facial nerve: anatomy and … scottish book trust black history month