Bulging Disc Definition. Herniated Disc Video. A bulging disc is a condition in which the nucleus (inner portion) of a spinal disc remains contained within the annulus fibrosus (outer portion), unlike a herniated disc in which the nucleus leaks out of the disc.erniated Disc Video. A bulging disc is a condition in which the nucleus (inner portion) of a spinal disc remains contained within the annulus fibrosus (outer portion), unlike a herniated disc in which the nucleus leaks out of the disc.
The term broad-spectrum antibiotic refers to an antibiotic that acts against a wide range of disease-causing bacteria. A broad-spectrum antibiotic acts against both Gram-positive and Gram-negative bacteria, in contrast to a narrow-spectrum antibiotic, which is effective against specific families of bacteria. An example of a commonly used broad-spectrum antibiotic is ampicillin.
They can also be classified according to spectrum of activity (whether they are effective against alot or few bacteria), how they are given and type of activity (whether they kill or simply immobilise the bacteria). Amoxicillin is a penicillin. These are the oldest antibiotics, they have a structure that is similar to cephalosporins for example cephalexin. Cephalosporins have different generations, 1st, 2nd and 3 rd. As we move from 1st generation to 3 rd generation the spectrum increases.