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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.
Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
![Horizontal stroking of the abdomen. Place a hand on either side of the waist, fingers pointing away ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_1_14_07_331061665.jpeg)
![Apply effleurage to face with palms. Place the hands gently on the face with fingertips at the jaw. ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_1_47_40_331172292.jpeg)
![To broaden and lift the quadriceps muscles, place the heels of the hands together directly on top of ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_7_05_47_33305645.jpeg)