Curiosity Guide #306 Skeletal System

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Curiosity Guide #306 Skeletal System Curiosity Guide #306 Skeletal System Accompanies Curious Crew, Season 3, Episode 6 (#306) Calcium-Rich Bones Investigation #6 Description Explore the role of calcium in making strong bones. Materials 6 chicken bones 6 containers Calcium tablets Vinegar Procedure 1: Prepare the bones 1) Boil the bones to remove any meat. 2) Soak the bones in 1 part bleach to ten parts water for five minutes. 3) Let the bones dry. Procedure 2: Investigate 1) Place one chicken bone in each of the 6 glasses. 2) Pour vinegar over each bone. 3) Do not add any calcium to the first container. 4) In the second container, add 300 milligrams of calcium. 5) In the third container, add 600 mg calcium, 1,200 mg in the fourth, 1,800 mg in the fifth, and 2,400 mg in the sixth. 6) Leave the bones for 5 days. 7) Compare the results. 8) Drop a calcium tablet into a cup of vinegar. How does it react? My Results Explanation In addition to calcium, bones also contain phosphorous. However, it is the calcium salts that make bones rigid. Acids such as vinegar can dissolve those calcium salts and leave the bone soft and rubbery. In this experiment, the more calcium that was in the container, the stronger the bones remained. Because the mineral calcium provides rigidity to the bones, it is important to eat calcium rich foods like low fat dairy; green, leafy vegetables like collard greens; beans; and nuts. A person between the ages of 11 and 24 should consume 1,200 milligrams of calcium every day. The elderly must be very cognizant of this as well to avoid osteoporosis. Parents and Educators: use #CuriousCrew #CuriosityGuide to share what your Curious Crew learned! Curious Crew is a production of Michigan State University. Learn more at WKAR.org. © MSU Board of Trustees. All rights reserved. .
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