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.
Antibiotics can be classified in different ways. Broad-spectrum vs Narrow-spectrum. Narrow-spectrum antibiotics act against only limited types of bacteria. List of narrow-spectrum antibiotics and their spectrum of activity: 1  Penicillin, Flucloxacillin, Dicloxacillin, Nafcillin sodium: Gram-positive bacteria. 2  Aztreonam: Gram-negative aerobic bacteria. 3  Linezolid: Gram-positive bacteria. 4  Polymyxin B: Gram-negative bacilli other than proteus.