Parts labeled on one side; letters are on the other for quizzing with LER 1903, 1904 & 1907, featured on this page. Eye Model STEM Features cornea, iris, pupil, retina, lens, optic nerve, vitreous humor, sclera, choroid, macula, ciliary muscle, optic disc, and zonules. Measures 5" in diameter. Grades 2+ | Ages 7+ LER 1907 $19.99 Pumping Heart Model Easy-to-use, multi-sensory model uses a hand pump to demonstrate basic heart and pulmonary blood flow. Includes labeled heart chambers, main artery, veins, and lungs, plus Activity Guide. Heart measures approximately 12"L x 11"W x 5"D. Grades 3+ | Ages 8+ SMALL PARTS (1). Not for < 3 yrs. LER 3535 $39.99 Cross-Section Models Take a closer look! Labeled cross-section models are realistically detailed. Made of durable, soft foam. Activity Guides feature reproducible diagrams and anatomy facts. Human Heart Model Features aorta, pulmonary artery, left & right atrium, inferior & superior vena cava, tricuspid valve, pulmonary valve, aortic valve, mitral valve, and left ventricle. Measures 5"L. Grades 2+ | Ages 7+ LER 1902 $19.99 Tooth Model Features enamel, dentin, pulp, cementum, nerves, blood vessels, root, and crown. Measures 5"H. Grades 2+ | Ages 7+ LER 1904 $19.99 Human Brain Model Features the main parts of the brain including: frontal lobe, cerebrum, occipital lobe, temporal lobe, medulla oblongata, thalamus, cerebellum, hypothalamus, and more. Measures 5"L. Grades 2+ | Ages 7+ LER 1903 $19.99 Stethoscope Let students hear their own heartbeat. Sturdy enough to withstand classroom use. Grades K+ | Ages 5+ SMALL PARTS (1). Not for < 3 yrs. LER 2427 $12.99 STEM STEM STEM STEM STEM ML 220 Life Science: Human Body Science
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