The respiratory system is divided into four components: the upper respiratory system, lower respiratory system, chest wall and diaphragm. Upper respiratory system: The upper respiratory system comprises all structures and passages involved in the conduction of air from outside the body to the larynx. This system includes the nose, mouth and structures within the hypopharynx.
These 10 animal facts will amaze you. There are two fundamentally different types of laser eye surgery: PRK and LASIK. Under these two categories, there are several different flavors or modifications of each type. For example, LASEK (with an E) is a newer type of PRK.here are two fundamentally different types of laser eye surgery: PRK and LASIK. Under these two categories, there are several different flavors or modifications of each type.
Eye Surgery Can Blind. There are risks to eye surgery, especially intraocular operations such as cataract removal or vitrectomy. Cataracts are the most common eye surgery and vitrectomy eye surgery is usually performed by a retina specialist for various problems of the retina and vitreous. Infection, inside the eye, called endophthalmitis, is uncommon, yet can blind. There are all sorts of âeyeâ surgery. There is cosmetic âeyeâ surgery to lift the eyelids, there is âeyeâ muscle surgery to correct strabismus (crooked eyes), laser âeyeâ surgery to get rid of glasses, etc.