Although herbaceous stems all have the same basic tissues, the arrangement of tissues varies considerably. a. Herbaceous dicot stems have vascular bundles arranged in a circle (ring) in x-section, and have a distinct cortex and pith. b. Herbaceous monocot stems have scattered vascular bundles and ground tissue instead of a distinct cortex and pith.
Acute pharyngitis remains contagious till the fever and other symptoms are not cured, it may take 48 to 72 hours to get relief from pain and fever when a person is on antibiotics therapy in streptococcus infection.
Chronic pharyngitis can cause a significant problem in daily life, starting from throat discomfort in the morning to alteration of voice.Chronic inflammatory condition of the pharynx characterized by hypertrophy of mucosa, seromucinous glands, subepithelial lymphoid follicles and even the muscular coat of the pharynx.auses (Etiology) Of Chronic Pharyngitis-. 1  Persistent infection in the surrounding structures of pharynx like sinus, tonsils, nose etc including dental sepsis. 2  Mouth breathing exposes pharynx to air which has not been filtered ,humidified and adjusted.