In 1989, explorer Will Steger and his dogsled team crossed Antarctica, traveling
ID: 189853 • Letter: I
Question
In 1989, explorer Will Steger and his dogsled team crossed Antarctica, traveling some 3,741 miles. Steger said later that his polar huskies worked the hardest and pulled all the weight. A husky's limb bones and skeletal muscles are suited for long-distance load-pulling. For example, the forelegs move freely, thanks to a deep but not-too-broad rib cage, and the dog also has a well-muscled chest. What king of muscles fibers and muscle mass would you expect to find in a husky's hind legs, which provide much of the brute power to propel a loaded sled?
Explanation / Answer
The muscles found in the body of a dog are composed of mass of cells which are held together by connective tissues and connected to the skeletal system, skin, and other muscles, to helps create movement. The muscles in the Pelvic limb consist of muscle in the dog's lower body. Majorly, pectoral and trapezius muscles in a dog control the flex and movement of the legs. The pectoral muscle allow for the adduction or medial movement of legs, while the trapezius muscle abducts the leg allowing for lateral movement while also allowing dogs to elevate their legs.