Hearth
1. The pavement or floor of brick, stone, or metal in a chimney, on which a fire is made; the floor of a fireplace; also, a corresponding part of a stove. There was a fire on the hearth burning before him.
Heart
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3. Heart
Natriuretic Peptides
In response to a rise in blood pressure, the heart releases two peptides:
A-type Natriuretic Peptide (ANP) ...
The Heart
(Cor)
The heart is a hollow muscular organ of a somewhat conical form; it lies between the lungs in the middle mediastinum and is enclosed in the pericardium (Fig. 490).
We have examined the effect of dietary polyunsaturated fatty acids (PUFAs) upon mitochondrial Ca2+ content and dehydrogenase activation in the rat heart.
We may not immediately think of our heart as a collection of individual cells. But it is the complex interaction of numerous cell types that give the heart its ability to pump blood.
heart -- Muscular pump which circulates the blood.
hemoglobin -- protein complex found in the blood of most chordates and the roots of certain legumes.
heartwood Inner rings of xylem that have become clogged with metabolic by-products and no longer transport water; visible as the inner darker areas in the cross section of a tree trunk.
heart
The muscular pump of the blood circulatory system.
hepatic caeca
A blind-ending sac in the digestive system, which occurs in mammals at the junction of the small and large intestines.
New Heart Disease Risk Factor Found
LBNL researchers report the discovery of a new human gene that affects triglyceride levels in the blood and may influence an individuals risk of developing cardiovascular disease.
Human hearts repaired using patient's own stem cells
Using the patient's own bone marrow derived stem cells, Dr.
lymph hearts Contractile enlargements of vessels that pump lymph back into the veins; found in fish, amphibians, and reptiles.
Hearts are pumps. They are highly muscularized portions of the circulatory system, often with a thin walled atrium, thick walled ventricle and valves to prevent back flow.
heartwood The wood found in the center of a tree trunk; often a darker color due to the accumulation of resins, oils, gums, and other metabolic by-products, which prevent water movement through this tissue.
Heart rate and speed are both referred to as variables. Heart rate depends on speed, so it is called a dependent variable. Speed does not depend on heart rate; it is an independent variable.
a heart chamber receiving blood from the circulation and pumping it into a ventricle
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
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The Heart: An Online Exploration created by the Franklin Institute Science Museum, is a thorough, well illustrated and animated guide to the human heart.
The Biology Project Home Human Biology ...
[Gk. kardio, heart + L. vasculum, a small vessel]
A closed circulatory system with a heart and branching network of arteries, capilleries, and veins.
carnivore ...
The job of your heart is to pump blood through your body. Even in your sleep, your heart keeps beating, or pumping blood. If it stopped, you would quickly die. Your heart is broken into two sides, separated by a septum.
The heart of mutualism is that two species live together in harmony. Both species receive an advantage by working with the other. It's wonderful. It's beautiful. More importantly, it helps them both survive.
>increasing the risk of heart attack, still the # 1 cause of death in the
>U.S.
> The text also mentioned the protective effect in females of having
>a second copy of the X chromosome, which can compensate for a mutation
>on the first copy.
heart disease, diabetes, and some cancers). Although such disorders are inherited, they depend on the simultaneous presence of several alleles; thus the hereditary patterns are usually more complex than those of single-gene disorders.
They're very hearty organisms. They're easy to take care of. They're not very susceptible to disease. And they breed very, very well.
A noninvasive procedure that utilizes reflected ultrasonic waves (echoes) directed to the heart that are converted and recorded as an image showing internal structures.
[Gr. epi - on, upon; Gr. myo - muscle; Gr. kardia - heart] The outer, thicker layer of the heart rudiment which arises from splanchnic mesoderm and fuses with the endocardium to form the heart wall.
Coronary Artery the artery supplying blood to the heart muscle
(corona = crown)
Corpus Luteum a temporary secretory structure which forms from remains of an ovarian follicle after ovulation
(corpus = body; luteo = yellow) ...
If there is not enough MTHFR activity, plasma homocysteine levels may rise, which in turn increases the risk of cerebrovascular, peripheral vascular, and coronary heart disease, as well as up to a ten-fold increase in the risk for venous thrombosis.
Transplantation of tissue or organs between organisms of different species, genus, or family. A common example is the use of pig heart valves in humans.
Source : PhRMA Genomics
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Organ A group of tissues that perform a particular job. Animals have more than a dozen organs, including the heart, brain, eye, liver, and lung.
hormone - a chemical agent that controls various physiological processes within an organism, e.g. adrenaline stimulates the heart; auxins and cytokinins in plants stimulate cell proliferation and growth (Glossary of PM) ...
Malate-aspartate shuttle A reversible shuttle, found in the liver and heart, used to transport electrons from cytoplasmic NADH to mitochondrial NAD+.
And at the heart of it all lies nothing more than Charles Darwin's simple, powerful insight: that the random chance of variation, coupled with the law of selection, is a problem-solving technique of immense power and nearly unlimited application.
Noonan syndrome -- a condition characterized by short stature and ovarian or testicular dysfunction, mental deficiency, and lesions of the heart.
 See also: Organ, Trans, Human, Cells, Blood
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