Interesting Pink Dolphin Facts For Kids | Amazon River Dolphin. 1  The Amazon River dolphins belong to the superfamily of Platanistoidea. 2  These dolphins spend most of their time in freshwater and their size can be greater than humans. 3  The length of the Amazon River dolphins measure around 1.53 â 2.4 meters (5.0 â 7.9 feet).
Causes of Back Muscle Spasms Video. A muscle spasm is the body's method of protecting injured structures, or as a means to protect itself from injury. Muscle spasms in the back can be caused by a muscle strain, a sprained muscle, or an underlying condition. 1  Tweet.2  Print.n treating back muscle spasms, it is very important to diagnose the underlying problem. The treatment should be directed at the underlying problem. Unless the underlying problem is evaluated, discovered, and treated, the back muscle spasms will tend to recur.
Chronic pain in the lower back may be caused by the discs or the joints of the spine. Lower Back Strain Video. Lower back strain is caused by damage to the muscles and ligaments of the back. Learn about muscle anatomy and the symptoms of lower back strain.