Sinus model 0192-00

heartpulmonary arteryesophagus

Fully three-dimensional and mounted on a hardwood base, this life-size unbreakable plastic model includes lungs, trachea, heart, esophagus, and complete larynx with vocal cords, all in their natural position. The right half of the larynx can be removed, as well as the heart and half of the left lung, which exposes the bifurcation off the trachea and bronchial tree, the pulmonary arteries and veins. The heart itself splits in halves to show its four chambers and valves, thus providing understanding of the directional blood flow there. Pulmonary circulation can also be easily traced, and with major vessels of the systemic circulation depicted, blood flow through the entire body can be demonstrated. 58 numbered structures are identified in the corresponding key. Hyoid bone Greater horn of hyoid bone Lesser horn of hyoid bone Median thyrohyoid ligament Lateral thyrohyoid ligament Thyrohyoid membrane Thyroid cartilage Superior horn of thyroid cartilage Inferior horn of thyroid cartilage Epiglottis Arytenoid cartilage Cricoid cartilage Cricothyroid ligament Cricotracheal ligament Cricothyroid muscle Thyroid gland Tracheal cartilages Vocal cords Esophagus Trachea Bifurcation of trachea Right bronchus Left bronchus Right lung Left lung Heart Right atrium Left atrium Right ventricle 30. Left ventricle 31. Bicuspid valve 32. Tricuspid valve 33. Semilunar valve of pulmonary artery 34. Semilunar valve of aorta 35. Aorta 36. Superior vena cava 37. Inferior vena cava 38. Pulmonary artery 39. Pulmonary veins 40. Right coronary artery 41. Left coronary artery 42. Anterior coronary veins 43. Posterior coronary veins 44. Coronary sinus