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Topic: Circulatory system

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In the News (Mon 22 Apr 19)

  NationMaster - Encyclopedia: Circulatory system
An open circulatory system is an arrangement of internal transport present in some invertebrates like mollusks and arthropods in which circulatory fluid in a cavity called the hemocoel (also spelled haemocoel) bathes the organs directly and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolymph (also spelled haemolymph).
The circulatory systems of all vertebrates, as well as of annelids (for example, earthworms) and cephalopods (squid and octopus) are closed, meaning that the blood never leaves the system of blood vessels consisting of arteries, capillaries and veins.
Circulatory System, or cardiovascular system, in humans, the combined function of the heart, blood, and blood vessels to transport oxygen and nutrients to organs and tissues throughout the body and carry away waste products.
www.nationmaster.com /encyclopedia/Circulatory-system   (470 words)

 Circulatory system - Wikipedia, the free encyclopedia
The digestive system is very branched, and because the worm is so flat, digested materials can be diffused to all the cells of the flat worm.
The main components of the circulatory system are the heart, the blood, and the blood vessels.
In fish, the system has only one circuit, with the blood being pumped through the capillaries of the gills and on to the capillaries of the body tissues.
en.wikipedia.org /wiki/Circulatory_system   (1178 words)

 circulatory system - Hutchinson encyclopedia article about circulatory system
System of vessels in an animal's body that transports essential substances (blood or other circulatory fluid) to and from the different parts of the body.
In birds and mammals, there is a double circulatory system – the lung or pulmonary circuit and the body or systemic circuit.
The human circulatory system performs a number of functions: it supplies the cells of the body with the food and oxygen they need to survive (see nutrition); it carries carbon dioxide and other waste products away from the cells;; it helps to regulate the temperature of the body; and protects the body from disease.
encyclopedia.farlex.com /circulatory%20system   (2088 words)

 Circulatory system   (Site not responding. Last check: 2007-09-19)
The circulatory system of arthropod s and most mollusk s is open, meaning that there are no capillaries and veins: one or more hearts pump the blood (more properly called hemolymph in this case) through the arteries to spaces called sinuses which surround the organs, allowing the tissues to exchange materials with the hemolymph.
The circulatory systems of all vertebrate s as well as of earthworm s, squid s and octopus es are closed, meaning that the blood never leaves the system of blood vessels consisting of arteries, capillaries and veins.
This fluid is returned to the bloodstream as lymph, via the lymphatic system, a system of lymph vessels separate from the circulatory system and without a central pump.
www.serebella.com /encyclopedia/article-Circulatory_system.html   (1364 words)

 Circulatory System - MSN Encarta
In addition, when foreign substances or organisms invade the body, the circulatory system swiftly conveys disease-fighting elements of the immune system, such as white blood cells and antibodies, to regions under attack.
Also, in the case of injury or bleeding, the circulatory system sends clotting cells and proteins to the affected site, which quickly stop bleeding and promote healing.
The systemic circulation carries oxygenated blood from the heart to all the tissues in the body except the lungs and returns deoxygenated blood carrying waste products, such as carbon dioxide, back to the heart.
encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761566878   (1179 words)

 Circulatory system   (Site not responding. Last check: 2007-09-19)
The circulatory system of arthropods and most mollusks is open meaning that there are no capillaries veins: one or more hearts pump the (more properly called hemolymph in this case) through the arteries spaces called sinuses which surround the organs allowing the to exchange materials with the hemolymph.
The circulatory systems of all vertebrates as well as of earthworms squids and octopuses are closed meaning that the blood never leaves system of blood vessels consisting of arteries and veins.
The circulatory system of the fetus is different as the fetus does use its lungs yet and obtains oxygen nutrients from the placenta through the umbilical cord.
www.freeglossary.com /Blood_circulation   (1086 words)

 Lesson 8 - The Circulatory System   (Site not responding. Last check: 2007-09-19)
The circulatory system is responsible for the transport of water and dissolved materials throughout the body, including oxygen, carbon dioxide, nutrients, and waste.
The circulatory system transports oxygen from the lungs and nutrients from the digestive tract to every cell in the body, allowing for the continuation of cell metabolism.
The circulatory system also transports the waste products of cell metabolism to the lungs and kidneys where they can be expelled from the body.
www.a-better-way.com /systems/8_1.html   (790 words)

 The Heart and the Circulatory System
Circulatory system: the system of the body responsible for internal transport.
Closed circulatory system: a type of circulatory system where the blood is contained within a system of vessels and the heart.
Open circulatory system: a type of circulatory system where the blood is not contained within a system of vessels and the heart.
www.accessexcellence.org /AE/AEC/CC/heart_glossary.html   (420 words)

 Circulatory System
Without this wiring system of finger thick to microscopically slender cables and connectors of some 70,000 miles of blood vessels the blood would not be able to acquire and accumulate essentials for the nourishment and health of the entire body.
It is the primary artery from which the arterial system wends.
The heart is a core playing member of the circulatory network and can be described as a small 9 ounce or 30 gram cavernous fist sized intertwining muscle located behind the breastbone and centered perpendicular to the midline of the chest.
library.thinkquest.org /2935/Natures_Best/Nat_Best_High_Level/Circulatory_Net_Pages/Circulatory_page.html   (1757 words)

 Splendid E-zine reviews: Circulatory System
Circulatory System has risen from the ashes of the mighty Olivias.
Circulatory System requires listeners to look to the future, while keeping their feet planted firmly in the past.
Bold, adventurous, whimsical and witty, this debut offering from Circulatory System proves beyond a shadow of a doubt that there are still signs of life to be found in the Elephant 6 collective.
www.splendidezine.com /reviews/sep-10-01/circulatory.html   (489 words)

 www.mnftiu.cc | fan fiction
Circulatory System Motherfucker grunted and stumbled back, and Snoopy followed up by planting a solid kick to his chest and a sweeping roundhouse to the side of the head that sent the transparent fighter to the ground.
Circulatory System Motherfucker kicked him in the collarbone with shattering force, but Karate Snoopy managed to bounce off the wall he had been hurtling towards and jump kicked a rather surprised Circulatory System Motherfucker in the face, then he landed, set himself and charged at Circulatory System Motherfucker, who had just reset himself as well.
Circulatory System Motherfucker was already there though, unleashing a barrage of punches upon Karate Snoopy, who was only able to block half of them before they began to land.
www.mnftiu.cc /mnftiu.cc/battleoffuckingbigtimes2.html   (826 words)

Systemic pressure is sensed by receptors in the arteries and atria.
Circulatory systems of several vertebrates showing the progressive evolution of the four-chambered heart and pulmonary and systemic circulatory circuits.
The Circulatory System A health-related view of the heart and its associated organs.
www.emc.maricopa.edu /faculty/farabee/BIOBK/BioBookcircSYS.html   (2943 words)

 Circulatory System
Arthropods, like insects and spiders, have an open circulatory system, in which the blood is pumped forward by the heart, but then flows through the body cavity, directly bathing the internal organs.
Vertebrates, like humans, have a closed circulatory system in which the blood stays in the circulatory system as it circulates, and chemicals are exchanged by diffusion.
The two major exceptions, in which arteries are carrying deoxygenated blood are the pulmonary artery which carries deoxygenated blood from the heart to the lungs (to pick up oxygen there) and the umbilical arteries which carry deoxygenated blood away from the baby’s body to the placenta (to pick up oxygen there).
biology.clc.uc.edu /courses/bio105/circulat.htm   (2764 words)

 Circulatory system
A circulatory system (sometimes cardiovascular system) is an organ system that moves substances to and from cells; it can also help stabilize body temperature and pH (part of homeostasis).
In amphibians and reptiles, a double circulatory system is used, but the heart is not always completely separated into two pumps.
System is an outreach of the McGruff Safe Kids Total Identification System program which uses a computerized system to deliver an instant record of a child's fingerprints (all 10 digits), digital photographs and vital information.
www.omniknow.com /common/wiki.php?in=en&term=Circulatory_system   (2661 words)

 Circulatory System   (Site not responding. Last check: 2007-09-19)
The heart, the lungs, and the blood vessels work together to form the circle part of the circulatory system.
The body's circulatory system really has three distinct parts: pulmonary circulation, coronary circulation, and systemic circulation.
Or, the lungs (pulmonary), the heart (coronary), and the rest of the system (systemic).
www.fi.edu /biosci/systems/circulation.html   (94 words)

 Circulatory System Summary and Recommended Nutritional Products
The Circulatory system provides a continuous supply of nutrients and oxygen to every cell in the body.
Health concerns related to the Circulatory system include high cholesterol or triglycerides, high blood pressure, stress, poor circulation and heart disease.
The human Circulatory system is composed of three types of vessels that total an incredible 60,000 miles in length.
www.greatestherbsonearth.com /bodysystems/body_system_circulatory.htm   (949 words)

 Circulatory System Theme Page
High school students are challenged to learn the structures and functions of a body system thoroughly so that they will be able to pass on the concepts and ideas to younger students in the form of children's books.
Select "Circulatory" for descriptions of the pulmonary circulation system, blood and its component parts, blood vessels and veins, and the heart.
The search term "circulatory and system" and variations of it will also work but to a lesser degree.
www.cln.org /themes/circulatory.html   (861 words)

 circulatory system lesson plans   (Site not responding. Last check: 2007-09-19)
The circulatory system carries life-giving blood to every cell in your body through a system of vessels...
Students create models of an oxygen-delivery system and relate it to the function of the human circulatory system.
For example, if the student says the circulatory system is in video clip #1, they must tell you how they know...
www.english-megasite.com /articles/35/circulatory-system-lesson-plans.html   (557 words)

 The Heart and the Circulatory System
Without the understanding of the circulatory system made possible by Harvey's pioneering work, the medical miracles that we think are commonplace would be impossible.
The closed circulatory system of some mollusks and all higher invertebrates and the vertebrates is a much more efficient system.
One of the simplest types of closed circulatory systems is found in annelids such as the earthworm.
www.accessexcellence.com /AE/AEC/CC/heart_background.html   (2457 words)

 The Circulatory System
The Circulatory System is the main transportation and cooling system for the body.
White Blood Cells are the paramedics, police and street cleaners of the circulatory system.
The superhighways of the circulatory system are the veins and arteries.
www.globalclassroom.org /hemo.html   (1253 words)

 Circulatory System
This is your circulatory system, and it is in constant motion for a very good reason.
Your circulatory system is like the freight train that delivers essential supplies to wherever they are needed in your body.
The third part of the circulatory system is the blood itself.
www.edhelper.com /ReadingComprehension_29_6.html   (373 words)

 www.Herb and Vitamin Center.com [Circulatory System]
The role of the circulatory system is twofold: It delivers oxygen and nutrients to all parts of the body while picking up waste materials and toxins that need to be eliminated.
This process, which is vital to the circulatory system, is also essential to the success of the immune system.
For the circulatory system to function properly, the heart must be strong, the vessels capable of safely transporting optimal amounts of blood, and the blood itself must be healthy.
www.angelfire.com /on2/herbandvitamincenter/circulatorysystem.html   (607 words)

 :: NASA Quest > Archives ::   (Site not responding. Last check: 2007-09-19)
If a gymnasium or hallway is used, mark off the parts of the circulatory system with squares of masking tape.
Students should be prepared to take on the role of a blood cell and know exactly where to travel in the circulatory system.
Encourage students to include the major parts of the circulatory system as characters in the story.
quest.arc.nasa.gov /smore/teachers/act9.html   (1090 words)

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