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This process continues into old age, where whether with a microscope or with the human eye, the thymus may be difficult to detect, [4] although typically weighs 5–15 grams. [3] Additionally, there is an increasing body of evidence showing that age-related thymic involution is found in most, if not all, vertebrate species with a thymus ...
Dogs have ear mobility that allows them to rapidly pinpoint the exact location of a sound. Eighteen or more muscles can tilt, rotate, raise, or lower a dog's ear. A dog can identify a sound's location much faster than a human can, as well as hear sounds at four times the distance. [41] Dogs can lose their hearing from age or an ear infection. [42]
A thymoma is a tumor originating from the epithelial cells of the thymus that is considered a rare neoplasm. [1] Thymomas are frequently associated with neuromuscular disorders such as myasthenia gravis; [2] thymoma is found in 20% of patients with myasthenia gravis. [3] Once diagnosed, thymomas may be removed surgically.
This category contains articles about the physical structure and appearance of the domestic dog. For diseases and disorders of dog anatomy, see Category:Dog health . Pages in category "Dog anatomy"
Macroscopic anatomy, or gross anatomy, is the examination of an animal's body parts using unaided eyesight. Gross anatomy also includes the branch of superficial anatomy. Microscopic anatomy involves the use of optical instruments in the study of the tissues of various structures, known as histology, and also in the study of cells. (Full article...
Pilliner S, Elmhurst S and Davies Z (2009) The Horse in Motion: The Anatomy and Physiology of Equine Locomotion John Wiley & Sons. ISBN 9781405147484. Stonehenge (2011) The Comparative Anatomy of Man, the Horse, and the Dog - Containing Information on Skeletons, the Nervous System and Other Aspects of Anatomy Abhedananda Press. ISBN 9781446536407.
This ligament is analogous in function (but different in exact structural detail) to the nuchal ligament found in ungulates. [10] This ligament allows dogs to carry their heads while running long distances, such as while following scent trails with their nose to the ground, without expending much energy.
The canine space (also termed the infra-orbital space) [1] is a fascial space of the head and neck (sometimes also termed fascial spaces or tissue spaces). It is a thin potential space on the face, and is paired on either side.