The Effect of Microgravity on Calcium Absorption by Bones Grade 7, Elkton Pigeon Bay-Port Laker Junior High School Co-Principal Investigators: Chandler.

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Presentation transcript:

The Effect of Microgravity on Calcium Absorption by Bones Grade 7, Elkton Pigeon Bay-Port Laker Junior High School Co-Principal Investigators: Chandler Furness, Sarah Hammond, Chelsey Katshor, and Halle Keim Collaborators: Hannah Hammond and Nicholas Wolschlager

Hypothesis The decalcified experimental bone will absorb the calcium in microgravity. The decalcified control bone will absorb the calcium increasing the bone’s density on Earth. ng.org/view_lesson.php?url =collection/cub_/lessons/c ub_human/cub_human_les son03.xml

Materials Buffered saline solution Ex vivo Gallus domesticus furcula: one section of same bone for control bone on Earth and one section for experimental bone on ISS in microgravity Natural Spring Valley Calcium 600 mg hypothetical-wishbone-a-caterpickles- fable / Lens-Care/Other-Soft-Contact-Lens-Care-Products/Sensitive- Eyes-Plus-Saline-ECP

Why Bone Density? Astronauts lose 15 to 30 % of their bone density while in space. Osteoporosis is a major issue in modern space flight. Bones lose calcium, they become lighter and less dense increasing the risk of breakage. Proving that a decalcified bone can absorb calcium will help improve astronaut health. ion_pages/station/expedit ions/expedition36/e36_ _launch.html

Procedure Step 1: Weigh, measure, and micro CT scan control and experimental bones Step 2: Decalcify both bones in white distilled vinegar Step 3: Repeat Step 1 and analyze results Step 4: Soak decalcified control and experimental bones in buffered saline calcium solution for same amount of days for control bone on Earth with gravity and experimental bone on ISS in microgravity. Step 5: Repeat Step 1 again Step 6: Compare weights, measurements and, micro- CT scans. Analyze results from control and experimental bones.

Bone Loss in Space Astronauts face many problems such as osteoporosis. While in space, a proper diet and exercising helps protect astronauts' bones. On Earth bone density is lost; in microgravity, this process accelerates.

Conclusion Without 1g of gravity the human skeleton loses bone mass/density at an accelerated rate. Calcium supplements help people on Earth, perhaps they could help astronauts in microgravity. We are using sections from the same bone for the ground and flight experiment, ex vivo. Therefore, we will conduct the ground experiment closer to the flight to protect the integrity of the bone.

Partner Organizations -Huron Intermediate School District-National Center for Earth and Space Science Education