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21 Cards in this Set
- Front
- Back
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a cell formed by the combination of two reproductive cells, one from a male and one from a female
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fertilized cell
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male reproductive cell
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sperm cells
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female reproductive cell; also called an egg cell
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ovum
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rapid growth
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growth spurt
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the body system that directs certain activities such as growth and development
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endocrine system
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organs that make up the endocrine system
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endocrine glands
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chemical messengers that help control some of your body's activities by changing the way the cells work
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hormones
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the gland in the endocrine system that produces growth hormone
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pituitary gland
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the gland that controls how fast your cells turn nutrients into energy; also controls how fast nutrients are used for building and repairing cells
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thyroid gland
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glands that make many different kinds of hormones that control how the body uses nutrients
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adrenal glands
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reproductive organs that make reproductive cells and hormones
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gonads
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the time of life when the gonads start making their own hormone; when males and females begin producing reproductive cells
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puberty
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the passing of certain characteristics from parent to their children
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heredity
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characteristics received from parents; the affect the way you look and act
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inherited traits
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strands of matter located in cells nuclei; contained codes for all your inherited traits
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chromosomes
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tiny bits of information on chromosomes; influence heredity
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genes
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describes the stronger gene of a pair; this gene codes keep on the recessive gene from being carried out
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dominant
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describes the weaker gene of the pair; it's codes are "hidden" by the codes on the dominant gene
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recessive
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perspiration odor is caused by
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bacteria
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blocked with too much oil causes an infection called
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acne
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mood swings are caused by hormone that are released into the body at
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unsteady rates
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