Before you watch the lecture, it is important that you understand 10 key words. For each of the definitions below, choose the correct word.
1. A factor, thing or element involving the possibility of suffering harm, loss, or danger.
2. The name of the developmental stage between the ages of 11-14 in girls and 13-16 in boys, in which an individual becomes physiologically capable of sexual reproduction.
3. To produce, create or bring something into existence.
4. The small junction across which a nerve impulse passes from one nerve cell to another nerve cell, a muscle cell, or a gland cell.
5. An individual who is going through the transitional period of physical and psychological development that occurs between youth and adulthood.
6. To consider as resulting from or belonging to a person or thing.
7. The outer layer of any organ or part, such as the grey matter that covers the brain.
8. To reduce or remove part of something to improve shape or growth, because it is not needed or unwanted.
9. A purpose, goal, objective or aim that guides action.
10. A cell of the nervous system that is specialized to conduct nerve impulses.
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