Briefly describe the five categories of bones found in the human body based on the shape of the bones
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The human body contains five types of bones based on shape. Long bones have greater length than width and consist of a shaft and a variable number of extremities. Short bones are somewhat cube-shaped because they are nearly equal in length and width. Flat bones are generally thin and composed of two nearly parallel plates of compact bones tissue enclosing a layer of spongy bone tissue. Irregular bones have complex shapes and cannot be grouped into any of the previous categories. Sesamoid bones develop in certain tendons where there is considerable friction, tension and physical stress and are shaped similarly to a sesame seed.
Question type: Multiple Choice
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A. Diencephalon B. Mesencephalon C. Metencephalon D. Neural tube E. Telencephalon
Smaller birds tend to lay smaller eggs with a smaller yolk supply than larger birds. This would be recognized as an example of
a. down regulation. b. a preadaptation. c. genetic fitness. d. a cost-benefit trade off. e. intrinsic control.
Thyroxine (T4) functions to
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One type of experimental contraceptive device is a skin patch that contains a chemical absorbed through the skin. Which of the following substances might be the type of chemical involved?
A. Carbohydrates B. Water-soluble substances C. Amino acids D. Proteins E. Lipid-soluble substances