
	Where results make sense

Topic: Fetal circulatory system

	Circulatory system - Biocrawler
		The circulatory systems of all vertebrates, as well as of annelids (for example, earthworms) and cephalopods (squids and octopuses) are closed, meaning that the blood never leaves the system of blood vessels consisting of arteries, capillaries and veins.
		The human circulatory system is comprised of the blood, the vascular system, and the heart.
		The circulatory system of the fetus is different, as the fetus does not use its lungs yet and obtains oxygen and nutrients from the placenta through the umbilical cord.
	www.biocrawler.com /encyclopedia/Circulatory_system (1314 words)

	Heart disease and cardiovascular disorders - coronary artery disease, heart attack, stroke, atherosclerosis
		The circulatory system is a group of organs that transport blood and the substances it carries to and from all parts of the body.
		The circulatory system can be considered as composed of two parts: the systemic circulation, which serves the body as a whole except for the lungs, and the pulmonary circulation, which carries the blood to and from the lungs.
		The circulatory system is situated in the chest in front of the respiratory system.
	heart-disease.health-cares.net (2335 words)

	ScienceDaily: 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).
		There are three types of circulatory systems (from simplest to most complex): no circulatory system, open circulatory system, and closed circulatory system.
		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).
	www.sciencedaily.com /encyclopedia/Circulatory_system (1433 words)

	Cardiovascular System
		As the name implies, blood contained in the circulatory system is pumped by the heart around a closed circle or circuit of vessels as it passes again and again through the various "circulations" of the body.
		Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body.
		Fetal Circulation Most circulatory pathways in a fetus are like those in the adult but there are some notable differences because the lungs, the gastrointestinal tract, and the kidneys are not functioning before birth.
	www.zgxl.net /eng/health/humanbody/cardiovascularsystem.htm (767 words)

	circulatory system
		Also known as the cardiovascular system, the system that, in humans and other higher animals, delivers oxygen and nutrients throughout the body by a complex network of vessels – arteries, arterioles, capillaries, veins, and venules.
		The vital role of the circulatory system in maintaining homeostasis depends on the continuous and controlled movement of blood through the thousands of miles of capillaries that permeate every tissue and reach every cell in the body.
		Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body.
	www.daviddarling.info /encyclopedia/C/circulatory_system.html (1375 words)

	Circulatory system
		The circulatory systems of all vertebrates, as well as of annelids (for example, earthworms) and cephalopods (squids and octopuses) are closed, meaning that the blood never leaves the system of blood vessels consisting of arteries, capillaries and veins..
		The human cardiovascular system comprises the blood, the heart, and a dual-circuit system of blood vessels that serve as conduits between the heart, the lungs, and the peripheral tissues of the body.
		The circulatory system of the fetus is different, as the fetus does not use its lungs yet and obtains oxygen and nutrients from the placenta through the umbilical cord.
	www.mrsci.com /Cardiovascular-System/Circulatory_system.php (1741 words)

	Ask a Scientist - Mother-fetus circulatory system
		The mother's circulatory system is not continuous with the fetus's.
		B lymphocytes do not reside in the endometrium and are unlikely to cross the placenta and enter the fetal circulatory system.
		It is known that fetal cells occasionally enter the maternal circulatory system, because the result is a documented medical tragedy.
	www.hhmi.org /cgi-bin/askascientist/highlight.pl?kw=&file=answers/developmental/ans_004.html (785 words)

	Lesson 8 - The Circulatory System
		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.naturalhealthschool.com /8_1.html (788 words)

	Circulatory System
		An open circulatory system is a system in which the heart pumps blood into the hemocoel which is positioned in between the ectoderm and endoderm.
		Since the lymphatic system is included as part of the circulatory system because of its circulation of excess fluid and large molecules, it decreases the pressure in tissues that extra fluid increases.
		The lymphatic system is a system of vessels that returns excess fluid and proteins to the blood and transports large molecules to the blood.
	www.cartage.org.lb /en/themes/Sciences/Zoology/AnimalPhysiology/CirculatorySystem/CirculatorySystem.htm (5666 words)

	Fetus - Wikipedia, the free encyclopedia
		The circulatory system of a human fetus works differently from that of born humans, mainly because the lungs are not in use: the fetus obtains oxygen and nutrients from the woman through the placenta and the umbilical cord.
		The extra-hepatic portion of the fetal left umbilical vein becomes the adult ligamentum teres hepatis (the "round ligament of the liver").
		Fetal hemoglobin enhances the fetus' ability to draw oxygen from the placenta.
	en.wikipedia.org /wiki/Fetus (1466 words)

	Circulatory system (Site not responding. Last check: )
		The circulatory system or cardiovascular system is the organ system which circulates blood around the body of most animals.
		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.
	www.freeglossary.com /Circulatory_system (1086 words)

	Introduction to Fetal Circulation (Site not responding. Last check: )
		Fetal circulation is arranged to accommodate the circulation through the placenta, as well as to allow most blood to by-pass the non-functional pulmonary circulation.
		At the time of birth and in the period shortly after birth, the fetal circulatory system is altered by the closure of these vessels, and the circulatory system assumes the normal adult pattern.
		Some congenital defects of the circulatory system are the result of the failure of these fetal vessles and passageways to close properly, resulting in abnormal strain on the chambers of the heart.
	www.vet.purdue.edu /bms/vldl/CA_06.html (190 words)

	Circulatory System (Site not responding. Last check: )
		The circulatory system has more individual variation dm any other system, and is the first of all organ systems to become functional during development.
		The carotid system of tetrapods carries blood to the head and is derived from the third aortic arches.
		Since fetal lungs are not inflated, the pulmonary circuit is bypassed by the ductus arteriosus (a remnant of the sixth aortic arch) which joins to the aorta.
	acad.udallas.edu /biology/Brown/Anatomy/13BCirculatory.html (2337 words)

	The Circulatory System
		The carotid system of tetrapods carries blood to the head and is derived from the third aortic arches.
		Since fetal lungs are not inflated, the pulmonary circuit is bypassed by the ductus arteriosus (a remnant of the sixth aortic arch) which joins to the aorta.
		The purpose of the lymphatic system is to drain fluids that accumulate in the tissues and empty into the venous system.
	www.shsu.edu /~bio_mlt/Chapter12.html (2265 words)

	links (Site not responding. Last check: )
		The one-way circulatory system carries blood to all parts of your body.
		Most of the blood in the pulmonary trunk bypasses the lungs by entering a fetal vessel called the ductus arteriosus which connects the pulmonary trunk to the descending portion of the aortic arch.
		The fetal blood supply passes to the placenta through two (2) umbilical arteries from the internal iliac arteries and returns through an umbilical vein which passes through the liver, ductus venosus, and joins the inferior vena cava.
	home.cc.umanitoba.ca /~soninr/NormalST.html (1309 words)

	bc_martini_eap_3\|Blood Vessels and Circulation\|Embryology Atlas
		Thus, the cardiovascular system is one of the first systems to develop in the embryo, delivering nutrients to the mitotically active cells and disposing of waste products through its association with the maternal blood vessels in the placenta.
		Throughout pregnancy, the fetal lungs are nonfunctional and the fetus depends upon the mother’s circulatory system for procurement of nutrients and the exchange of gases and metabolic wastes.
		The capillary exchange between the maternal and fetal circulation occurs within the placenta, a remarkable structure that includes parts of the uterus of the mother during pregnancy and is discharged following delivery as the afterbirth.
	wps.aw.com /bc_martini_eap_3/0,7016,454436-,00.html (2855 words)

	Historical Review and Recent Advances - Chapter 14
		The first recorded mention of the fetal cardiovascular system is attributed to Galen who, in the Second Century A.D., described what were later to become known as the foramen ovale and its valve, as well as the ductus arteriosus, and gave some account of their post-natal closure.
		The knowledge about the immediate circulatory adaptation to extrauterine life is also largely built on data from prenatal and postnatal animal studies but to a great extent is also based on studies of the human circulation in the postnatal period.
		Because of the initially small differences in the systemic and pulmonary vascular resistance, and since the central circulatory pattern of the newborn infant is labile-relatively small changes in pulmonary vascular resistance will provoke relapses into fetal circulatory pattern with ductal and/or atrial right to left shunting and arterial desaturation.
	www.neonatology.org /classics/mj1980/ch14.html (5313 words)

	The Ultimate Circulatory system Dog Breeds Information Guide and Reference
		The human circulatory system is comprised of the blood, the vascular system, and the heart.
		Humans have a double circulatory system which consists of separate but connecting circulations: the pulmonary circulation and the systemic circulation.
		Oxygenated blood from the lungs returns to the heart via the pulmonary veins, flows into the left atrium and then into the left ventricle, which then pumps the blood through the aorta, the major artery which supplies blood to the body.
	www.dogluvers.com /dog_breeds/Cardiovascular (1211 words)

	Blood Circulation
		Since the fetal lungs do not function to exchange gases, and oxygentated blood is obtained from the mother, there are some significant differences in the circulatory system of adults and the fetus.
		This system is similar to the venous system (the vessels are thin walled and have valves) except the vessels end blindly in the tissues.
		Name any 4 structures that found in the circulatory system of a fetus but not in the adult and describe their function.
	abbysenior.com /biology/circ.blood.htm (2573 words)

	Persistent Pulmonary Hypertension of the Newborn (PPHN)
		Normally, when a baby is born and begins to breathe air, his circulatory system quickly adapts to the outside world.
		In a baby with PPHN, however, the fetal circulatory system doesn't "switch over." The ductus arteriosus remains open, and the baby's blood flow continues to bypass the lungs.
		Depending on the degree of PPHN causing the persistent fetal circulation, the oxygen in the air your baby breathes into his lungs is not adequately picked up and carried by the blood to other areas of the body that need it (such as the brain, kidneys, liver, and other organs).
	kidshealth.org /parent/medical/heart/pphn.html (640 words)

	FETAL BLOOD AND CIRCULATION
		The rest of the fetal blood entering the right atrium, including a large proportion of the deoxygenated blood entering from the superior vena cava passes into the right ventricle and out through the pulmonary trunk.
		Most of the blood in the pulmonary trunk bypasses the lungs by entering a fetal vessel called the ductus arteriosus which connects the pulmonary trunk to the descending portion of the aortic arch.
		The fetal blood supply passes to the placenta through two (2) umbilical arteries from the internal iliac arteries and returns through an umbilical vein which passes through the liver, ductus venosus, and joins the inferior vena cava.
	www.cayuga-cc.edu /people/facultypages/greer/biol204/heart4/heart4.html (877 words)

	GLOSSARYC
		cardiovascular system The human circulatory system consisting of the heart and the vessels that transport blood to and from the heart.
		circulatory system, closed A system that uses a continuous series of vessels of different sizes to deliver blood to body cells and return it to the heart; found in echinoderms and
		circulatory system, open A system in which the circulating fluid is not enclosed in vessels at all times; found in insects, crayfish, some mollusks, and other invertebrates.
	www.emc.maricopa.edu /faculty/farabee/BIOBK/BioBookglossC.html (2276 words)

	Fetal Circulation
		Most of the blood flows to the left side through a special fetal opening between the left and right atria, called the foramen ovale.
		Blood then passes into the left ventricle (lower chamber of the heart) and then to the aorta, (the large artery coming from the heart).
		Instead of blood flowing to the lungs to pick up oxygen and then flowing to the rest of the body, the fetal circulation shunts (bypasses) most of the blood away from the lungs.
	www.healthsystem.virginia.edu /UVAHealth/peds_cardiac/fetlcirc.cfm (425 words)

	Animalearn: Animals, Ethics & Education
		The structure and function of the digestive, respiratory, reproductive, nervous, circulatory, skeletal, and excretory systems are examined and compared to those of the earthworm and sea star.
		The structure and function of the digestive, respiratory, reproductive, nervous, circulatory, skeletal, and excretory systems are examined and compared to those of the crayfish and sea star.
		The structure and function of the digestive, respiratory, reproductive, nervous, circulatory, skeletal, and excretory systems are examined and compared to those of the earthworm and the crayfish.
	www.animalearn.org /view_sciencebank.php (5724 words)

	Blood - The River of Life
		Blood transports various substances from one part of the body to another by continuous flowing through a closed system of blood vessels known as the circulatory system.
		Circulation is begins at early fetal life and it is estimated that a given portion of blood would take 30 seconds to complete one course of circulation around the body.
		Systemic circulation supplies nourishment to all of the other tissues located throughout your body.
	library.thinkquest.org /C0115080/?c=circ_sys (1037 words)

	Persistent Pulmonary Hypertension of the Newborn (PPHN)
		Normally, when a baby is born and begins to breathe air, his circulatory system quickly adapts to the outside world.
		In a baby with PPHN, however, the fetal circulatory system doesn't "switch over." The ductus arteriosus remains open, and the baby's blood flow continues to bypass the lungs.
		Depending on the degree of PPHN causing the persistent fetal circulation, the oxygen in the air your baby breathes into his lungs is not adequately picked up and carried by the blood to other areas of the body that need it (such as the brain, kidneys, liver, and other organs).
	www.kidshealth.org /parent/medical/heart/pphn.html (640 words)

	Blood Circulation
		Since the fetal lungs do not function to exchange gases, and oxygentated blood is obtained from the mother, there are some significant differences in the circulatory system of adults and the fetus.
		This system is similar to the venous system (the vessels are thin walled and have valves) except the vessels end blindly in the tissues.
		Name any 4 structures that found in the circulatory system of a fetus but not in the adult and describe their function.
	www.abbysenior.com /biology/circ.blood.htm (2573 words)

	Drugs Not FDA Approved for Obstetrics
		Astramorph/PF is a systemic narcotic analgesic for administration by intravenous, epidural or intrathecal routes.
		The central nervous system effects include depression of spontaneous respiratory activity and cough reflex, stimulation of the emetic center affecting nausea, and sedation.
		Fetal exposure to the drug in utero may lead to significant birth defects, therefore the drug must be prescribed under stringent conditions that rule out the likelihood of pregnancy during treatment or within one month of discontinuing treatment.
	www.aimsusa.org /ObstetricDrugs-NotApproved.htm (3566 words)

	Dov Apfel -- An Introduction to Birth Trauma Litigation -- Cerebral Palsy, Birth Injury, Lawyer, Attorney
		Oxygen and glucose originate in the maternal blood, where they are are transported to the placenta, then through the umbilical cord, to the fetal circulatory system, and, finally, to the fetal brain.
		Certain maternal, fetal, or neonatal conditions can interfere with normal blood flow to the fetal or newborn brain ("schemia"), or reduce the oxygen content of the blood perfusing the brain tissue ("hypoxemia").
		The topics include: placental pathology, electronic fetal monitoring, antepartum fetal testing, perinatal infection, the assessment and management of newborn complications, blood gas testing and pediatric neuroimaging.
	www.birthinjuryinfo.com /birthinjury.html (560 words)

Try your search on: Qwika (all wikis)