drdonna Chapter 3 Word Scramble
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| Term | Definition |
| Mitochondrial theory | The theory that aging is caused by the decay of the mitochondria, which are tiny cellular bodies that supply energy for cell function, growth, and repair |
| Cellular Clock Theory | The theory that the number of times human cells can divide is about 75 to 80. As we age our cells are less able to divide. |
| Life span | The upper boundary of life, which is the maximum number of years an individual can live. |
| SIDS | Condition that occurs when an infant stops breathing, usually during the night, and suddenly dies without an apparent cause. |
| Neurogenesis | The generation of new neurons. |
| Corpus collosum | A large bundle of axion fibers that connects the brain's left and right hemispheres. |
| Amygdala | A part of the brain's limbic system that is the seat of emotions such as anger. |
| Prefontal cortex | The "judgment" region reins in intense emotions but does not finish developing until at least emerging adulthood. |
| Lateralization | Specialization of function in one hemisphere or the other of the cerebral cortex. |
| Climacteric | The midlife transition during which fertility declines. |
| Puberty | A period of rapid physical maturation involving hormonal and bodily changes during early adolescence. |
| hypothalmus | A structure in the brain that is involved with eating and sexual behavior. |
| gonadotropins | Hormones that stimulate the testes or ovaries |
| Adrenal gladn | It interacts with the pitutary gland and likely plays a role in pubertal development, but less is known about its function than about sex glands. |
| Cephalocaudal | The sequence in which the fastests growth occurs at the top of the body -- the head and feature differentiation gradually working from top to bottom. |
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