A period of time in which all factors of production and costs are variable. In the long run, firms are able to adjust all costs, whereas in the short run firms are only able to influence prices through adjustments made to production levels.Additionally, whereas firms may be a monopoly in the short-term they may expect competition in the long-term.ong-Run Average Total Cost-LRATC. Firms examining the long run understand that they cannot alter levels of production in order to reach an equilibrium between supply and demand.
10 most extreme places on Earth. A pharyngeal pouch is a pocket that forms in the lining of the pharynx, which sits at the back of the throat between the esophagus and the mouth in humans and most animals. videofluoroscopy swallow study, or barium swallow, is the most effective way of diagnosing a pharyngeal pouch in most cases. In this test, the patient drinks a solution that contains barium sulfate, a metallic compound that is visible on x-rays.
The pharynx (plural: pharynges) is an organ found in vertebrates and invertebrates, though the structure is not universally the same across the species. In humans the pharynx is part of the digestive system and also of the conducting zone of the respiratory system.The conducting zone also includes the nose, larynx, trachea, bronchi, and bronchioles, and their function is to filter, warm, and moisten air and conduct it into the lungs.t makes up the part of the throat situated immediately posterior to the nasal cavity, posterior to the mouth and superior to the esophagus and larynx. The human pharynx is conventionally divided into three sections: the nasopharynx, the oropharynx and the laryngopharynx.