Scientific Cavities of the Nose, Mouth and Throat with Larynx Model

The model is cut horizontally from the upper part of the eyebrow arch, and a cross-section is made from 2-3 trachea rings below the thyroid, which can be disassembled and assembled.
The oral cavity is the starting part of the digestive tract. The anterior wall is the lip, which leads to the outside world through the oral fissure. The oral cavity is divided into two parts by forming a dental arch through the pharyngeal gate and the oropharyngeal groove bone. The vestibule of the oral cavity is located between the dentition and the lip and cheek, while the inherent oral cavity is located within the dentition. 2. The nasal cavity is a narrow cavity with a narrow top and a wide bottom, starting from the anterior nostril and ending at the posterior nostril, communicating with the nasopharynx. The same nasal septum is divided into two chambers, left and right, and each side of the nasal cavity includes two parts: the nasal vestibule and the inherent nasal cavity. The pharynx is located between the oral cavity and the esophagus, belonging to both the digestive and respiratory systems. It is a common pathway between the respiratory and digestive tracts, starting from the skull base and descending to the lower edge of the cricoid cartilage plane, equivalent to the 6th cervical esophagealentrance plane. In adults, the total length is about 12-14cm. The pharynx is divided into three parts: nasopharynx, oropharynx, and laryngopharynx.
Open the throat above the throat; Thelower airway is an important organ for breathing and pronunciation. Located in the central anterior part of the neck, equivalent to the 3rd to 6th cervical vertebrae in adults, it is a cone-shaped tubular organ composed of a group of cartilage, ligaments, laryngeal muscles, and mucosa