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PHS Ch 17
Academic Knowledge: Body Systems for Maintenance and Continuation
Question | Answer |
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absorption | the act of taking up a substance into a tissue, such as the movement of nutrients from the small intestines into the bloodstream. |
digestion | term for the mechanical and chemical breakdown of food into nutrients that can be absorbed and used by the body. |
excretion | the removal of waste products from the body. |
filtration | the process of separating substances, such as solid from liquid, large from small, or impure from pure. |
gametes | reproductive cells that have half the normal number of chromosomes and unite during fertilization; sperm in males and ova in females. |
heredity | the passing of traits (such as eye color, height, and some diseases) from parent or ancestor to offspring through chromosomes. |
ingestion | the stage of digestion in which food is taken into the body through the mouth. |
meiosis | the sexual process of cell division that produces four new haploid cells, each with a unique combination of 23 chromosomes. |
mitosis | the asexual process of cellular reproduction that creates two identical copies of a cell, each with a full set of 46 chromosomes. |
nutrients | molecules such as carbohydrates, proteins, fats, vitamins, and minerals used by the body to grow and maintain body processes. |
reabsorption | The act of returning a substance to the part of the body from which it was previously filtered out. |
secretion | the release of a liquid substance from blood, cells, or tissues. |