Examlex
________ is the main fuel used in nuclear fission reactors to produce electricity because it is the only natural isotope capable of sustaining a controlled fission reaction.
Stimulus
Any external or internal factor that influences the activity of a living organism or any of its parts.
Calcitonin
A hormone produced by the thyroid gland that helps regulate calcium levels in the blood.
Blood Calcium Levels
The concentration of calcium in the blood, essential for various bodily functions including bone formation, nerve transmission, and muscle contraction.
Osteoblasts
Cells responsible for bone formation and the synthesis of the bone matrix.
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