When you contract the attached muscles (subscapularis muscle, the supraspinatus muscle, the infraspinatus muscle, and the teres minor muscle), they pull on the tendons causing the shoulder to rotate up or down, back or front, in or out; hence the name 'rotator' cuff.
Acinonyx jubatus portrait. Â© 2007 Mark Probst. The cheetah is a big cat and is now, mainly found in southern Africa. It is known for its speed as it is able to accelerate from 0-60 miles per hour in only three seconds, and it is able to reach speeds of around 70 miles per hour (112 kilometers per hour).
The Puma lineage, depicted along with the Lynx and Felis lineages of the family Felidae. The cheetah is the only extant species of the genus Acinonyx. It belongs to Felinae, the subfamily of Felidae that also includes lynxes, wildcats, and the puma.