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Physiology
Answer: 2) Dilatation (bronchodilatation)
Explanation: Epinephrine acts on beta-2 adrenergic receptors in the bronchial smooth muscles, leading to their relaxation and dilatation of the bronchioles. This allows for increased airflow and oxyge
Orthodontics
Explanation: The philtrum is the vertical groove located in the middle of the upper lip. It is primarily formed by the fusion of the medial nasal processes, which include the globular process. The globular process is a key structure in the embryoni