The Anatomy Of Sheep And Animal Animals

800 Words Sep 10th, 2016 4 Pages
The anatomy of sheep differs mainly from that of a human. However, there are some areas of a sheep’s bone structure that resemble different parts of a human’s bone structure. For example, the hock on a sheep is equivalent to an ankle on a human. The hock being higher up on the leg compared to the ankle shows that sheep evolved to have their leg joints and bones to extend upward. Also, the pastern is anatomically homologous to the joints at the end of a human’s finger. The pastern benefits a sheep by being able to disperse the force from the leg when a sheep steps down or when the sheep’s elbow and knee are locked. Lastly, the anatomy of the stifle joint is similar to that of a human knee with both being made up of the femur, tibia, and patella. The stifle joint is a hinge joint, allowing the stifle joint to move in two directions, which helps with moving around along with muscle movement. Even though the anatomy of a human and a sheep differ in obvious ways, there are some homologous structures that evolved in each of the different species. The wild ancestors of the common day domestic sheep developed certain characteristic to maintain their survival. For example, sheep have specialized sebaceous glands which are glands that secrete an oily substance into the fur and onto the skin. These glands have three locations on a sheep’s body: the infra-orbital pouches on the face, the interdigital pouches are located on and around the hooves, and the inguinal pouches are located on…
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