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).
Looking like a giant rose-ringed parakeet, the Alexandrine I parakeet (Psittacula eupatria) is the largest member of its genus. Both parakeets have the streamlined body shape shared by all parakeets, but the larger species is 23â³ long, weighs up to II oz. and is equipped with a truly massive bill.