MEDICAL ENCYCLOPEDIA. 1  Back pain - returning to work. 2  Back pain and sports. 3  Compression fractures of the back. 4  Lifting and bending the right way. 5  Lumbosacral spine x-ray. 6  Returning to sports after a back injury. 7  Spinal fusion. 8  Spinal fusion - slideshow. 9  Vertebroplasty - slideshow.
The mucociliary escalator is one of the major defense mechanisms, which protect the lung, and if the mucociliary escalator fails, it increases the risk that the normal and potentially pathogenic, inhabitants of the nose, throat and the back of the mouth, will descend into the lung, resulting in a potentially life-threatening pneumonia ( Anatomy and Physiology, 2013, p. 139).
The main purpose of the pharyngeal constrictor muscles is to allow food received through the larynx to pass through the esophagus. this is achieved when the elevator muscles r â¦ elax, the pharynx descends and the constrictors contract upon the bolus of food.he muscle performs many important functions for the body. It  produces movement, maintains posture and gives shape to your body,  stabilizes joints, and generates heat. Mus â¦ cles protect your  internal organs as well.