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31 Cards in this Set
- Front
- Back
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Agrarian |
an economy based on farming |
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spinning jenny |
machine developed in the 1760s that could spin several threads at once |
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interchangeable parts |
Identical machine made parts for a tool or instrument that can be easily assembled or replaced |
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urbanization |
movement of population from farms to cities |
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turnpikes |
road built by a private company that charges a toll to use it |
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corduroy road |
road made of logs |
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canal |
artificial channel filled with water to allow boats to cross a stretch or land |
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locomotive |
engine that uses stream or another power source to pull a railroad train |
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telegraph |
communication device that sends electrical signals along a wire |
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famine |
severe food shortage and starvation |
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slave code |
laws that controlled the lives of enslaved African Americans and denied them basic rights |
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nativist |
` |
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factory system |
method of producing goods that brought workers and machinery together in one place |
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capitalist |
person who invests in a business to make a profit |
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what are the functions of the endocrine system? |
help regulate and coordinate body systems |
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what are hormones? |
Hormones are chemical messages manufactured in glands throughout the body |
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what can endocrine glands do and how? |
Endocrines release hormones directly into the blood because they are ductless |
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negative feedback system |
endocrine system gives chemical messages to control the production and release of hormones |
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male internal organs |
testes |
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testes |
create sperm and male hormone testosterone |
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sperm + fluid energy source |
= semen |
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female internal organs |
ovaries |
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what does the ovulation process do? |
releases an egg once a month |
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uterus |
a hollow, pear shaped, muscular organ, in which fertilized eggs develop |
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menstrual cycle |
monthly cycle of changes in the female reproduction system |
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the menstrual cycle is controlled by |
endocrine hormones including estrogen and progesterone |
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period |
the release of blood and uterine lining tissue (happens in women) |
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phase one of menstrual cycle |
menstruation starts and usually lasts about 4 to 6 days |
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phase two of menstrual cycle |
thickening of the uterus lining and hormones, or egg release |
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phase three of menstrual cycle |
continues with uterine preparation and ends with uterus hormone levels and uterine lining breakdown if no fertilized egg arrives |
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menopause |
the gradual shutdown of the ovaries which ends ovulation and menstrual periods |
