Hey can you help me!?science project!circulatory syatem!?
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Why don't you try searching google with words like: physiology, "blood pressure"  hypotension
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Yes, vertebrates DO have circulatory systems.\n\nPutting a question mark on the end of a sentence fragment copied from your homework does not make it a comprehensible question.
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Hey Kid do your own home work. You need to stop putting it off.\nI clue look up blood flow. And hemoglobin
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http://science.howstuffworks.com/vdg2.htm
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i  think it referer to a problem that doctors are having with some valves that help pump blood in patients hearts. look it up on the internet and you will find it im sure. then thus explain the device and how and when it is used and find out if the the device is agreeable for research to benifit other persons. and why the research is necessary. give that a  go and see if i got it. good luck 2 u mexxxi
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I won't do your homework for you. But I will tell you this:\n\n\n1a&b. These should be common sense. Go outside and turn on the garden hose and tell your teacher what you've observed.\n2a. Look up BERNOULLI'S LAW as it pertains to fluid pressure through a tube. There is a formula that related pressure to hose diameter and volume.\nb. The answer is: high pressure is bad for vessels weakened by atherosclerosis.
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cardiovascular system
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The two blood flows would not be the same.  Think of the cross-sections of the blood vessels as circles. At a constant pressure, the amount of blood carried increases in proportion to the area of the circular cross-section.\n\n4mm blood vessel:-\nArea = pi x square of radius\n= 3.14 x 4\n= 12.56 sq mm\n\n2mm blood vessel:-\nArea = pi x square of radius\n= 3.14 x 1\n= 3.14 sq mm\nso two 2mm blood vessels = 3.14 x 2\n= 6.28 sq mm\n\ni.e. exactly half the amount of blood would flow through the two smaller vessels compared with the one larger vessel.\n\nIn practice, the greater surface area of the walls of the two smaller vessels would cause greater resistance and reduce the blood flow relative to the larger vessel so that the flow would be somewhat less than half.
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Check out this link.\n\nhttp://www.all-science-fair-projects.com/\n\nThere are many others like it on the web.\n\nhttp://www.scienceproject.com/projects/index/intermed.asp\n\nhttp://www.dep.state.pa.us/newsletter/?varQueryType=PrintVersion&NewsletterID=207\n\nhttp://www.sciencefairgeek.com/lab/sciencefairdisplays/
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Hi!  This has been my fav. site when it came to doing science projects so far.  http://www.stevespanglerscience.com/index.php\nRemember to call your local papers and have a write up done on it so you have a good turn out for the crowd.  Good luck!
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I recently did a very interesting research project on ERECTILE DYSFUNCTION for Biology 30.\nIt is quite a relevant topic and sure to be an interesting one to talk about. It can't help but grab people's attention. Hey it grabbed yours didn't it?
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Go to www.sciencedirect.com or pubmed.\n\nYou may find some answers.
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Circulatory - keeps the blood and nutrients circulating to all vital organs\nRespiratory - provides oxygen to the blood system, and eliminates CO2\nNeurological - controls the other systems\nDigestive - provides the nutrients circulated by the blood system, and excretes the waste products, ridding the body of toxins\nRenal - maintains healthy fluid balance so that the blood can flow through the body with ease, also eliminates waste products, ridding the body of toxins
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Well if I remember this right...NASA was doing experiments a few years ago with rhubarb and pumpkin plants. The C02 oxygen exchange was the greatest. Also there was something about a genetically engineered algae they were trying out
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Do searches at these sites for a start.\n\nhttp://www.scienceresearch.com/search/\n\nhttp://www.scirus.com/srsapp/
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Hi there,\n\nHere you go ... http://www.proquestk12.com/productinfo/sirs_researcher.shtml
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The Cardiovascular System\n\n\n The cardiovascular system and the lymphatic system form what is collectively called the circulatory system. Together, these systems transport oxygen, nutrients, cell wastes, hormones, and many other substances to and from all cells in the body. The trillions of cells in the human body take up nutrients and excrete wastes every minute of every day. Although the pace of this exchange may increase with activity or slow with rest, it happens continuously. If it stops, so does life. Of the two systems, the cardiovascular system is the primary transport operator; the lymphatic system aids it in its function.\n\n\nDesign: Parts of the Cardiovascular System\n\nCardiovascular comes from the Greek word cardia, meaning "heart," and the Latin vasculum, meaning "small vessel." The basic components of the cardiovascular system are the heart, the blood vessels, and the blood. The system can be compared to a large muscular pump (the heart) that sends a fluid (blood) through a series of large and small tubes (blood vessels). As blood circulates through the increasingly intricate system of vessels, it picks up oxygen from the lungs, nutrients from the small intestine, and .....