Ear GIANT 3-part Ear Anatomical Model DG133 *

GIANT 3-part Ear Anatomical Model DG133

Denoyer-Geppert Enlarged Ear Model Dwarfs ordinary ear models and demonstrates equilibrium with liquid-filled canals. 5 times life-size, this unbreakable polymer reproduction depicts the human organ of hearing and balance. Sagittally sectioned along the length of the auditory canal and Eustachian tube, it is easy to trace the path of sound waves entering the ear, and it becomes clear how pressure is equalized on both sides of the eardrum. The entire middle ear chamber and the labyrinth is exposed to view. The malleus (hammer) and incus (anvil), and the attached see-through tympanic membrane lift out, as well as the entire labyrinth unit, for hands-on study. Two of the three semicircular canals are made of transparent tubing filled with colored fluid representing the endolymph. An air bubble in each will shift position when tilted, demonstrating the function of the canals in maintaining equilibrium. A spiral cutaway of the cochlea shows its three canals in contrasting colors to teach the concept of pitch. 36 hand-numbered features are identified in the accompanying key. 16x11x7 inches (41x28x18 cm).

LFA # DG133

GIANT 3-part Ear Anatomical Model DG133Our 2 in 1 life size heart has been fitted with detachable / re-attachable bypass vessels for demonstrating single, double, and triple bypass grafts as well as a normal heart without bypasses. This resilient vinyl heart divides into anterior and posterior sections to access its pumping chambers and valves. Vessels are color-coded red or blue to indicate whether they carry oxygenated or deoxygenated blood. Significant cardiac features, 33 in all, are hand numbered on the model for identification in the accompanying key. Nesting on a form-fitting display base, the heart lifts off for hands-on observation and study. Overall dimensions: 4x4x6 inches (11x11x15cm).