Both penicillin and macrolide antibiotics have been regarded as acceptable therapies for group A streptococcal pharyngitis for decades. Because of its convenient dosing, azithromycin has become the most commonly used alternative to penicillin in treating this common illness. Resistance to azithromycin in the United States has remained negligible over the years.
The main function of pons is to basically act as a bridge or highway for relay of many signals to and from the cerebrum and the cerebellum. This is the center that acts as the point of origin for various nerves in the body, including the important cranial nerves.
The Pons. The pons, which is also part of the brain stem, is inferior to the midbrain and superior to the medulla. Its posterior border is separated from the cerebellum by the aqueduct of Sylvius, and more inferiorly, by the fourth ventricle. Motor and sensory tracts traverse the anterior surface of the pons.he corpora quadrigemina, which is located on the posterior surface of the midbrain, is composed of two superior colliculi and two inferior colliculi. The superior colliculi are part of the visual system, relaying input from the optic tract to the lateral geniculate bodies of the thalamus.