Cow longitudinal section of bone, front leg bone, to view internal structure, periosteum, solid bone layer, spongy bone, medullary canal, yellow bone marrow, red bone marrow, epiphysial line, head of the long bone with articulating surface of the hyaline cartilage* * Ward's preserved cow material is a byproduct of the food industry. Cows are not raised specifically for dissection. This animal material is "recycled" for educational use.
Sun, Earth, Moon Orbital Model, Multiple moving axis to demonstrate daylight, night, seasons and phases of moon, Requires two AA batteries, Light bulb inside sun to demonstrate sun light on moon & earth, Base has the months of the year along with the season
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