News tagged with human heart
Pivotal role for proteins -- from helping turn carbs into energy to causing devastating disease
Research into how carbohydrates are converted into energy has led to a surprising discovery with implications for the treatment of a perplexing and potentially fatal neuromuscular disorder and possibly even cancer and heart ...
May 24, 2012 |
5 / 5 (1) |
0
|
Scientists solve a mystery of bacterial growth and resistance
Scientists at The Scripps Research Institute have unraveled a complex chemical pathway that enables bacteria to form clusters called biofilms. Such improved understanding might eventually aid the development ...
Apr 26, 2012 |
4.5 / 5 (2) |
0
|
Nanofiber breakthrough holds promise for medicine and microprocessors
(PhysOrg.com) -- A new method for creating nanofibers made of proteins, developed by researchers at Polytechnic Institute of New York University (NYU-Poly), promises to greatly improve drug delivery methods ...
Nanotechnology / Nanomaterials
Feb 29, 2012 |
5 / 5 (6) |
0
|
Scientists use silk from the tasar silkworm as a scaffold for heart tissue
(PhysOrg.com) -- Damaged human heart muscle cannot be regenerated. Scar tissue grows in place of the damaged muscle cells. Scientists from the Max Planck Institute for Heart and Lung Research in Bad Nauheim ...
Jan 30, 2012 |
not rated yet |
0
|
Researchers create first human heart cells that can be paced with light
In a compact lab space at Stanford University, Oscar Abilez, MD, trains a microscope on a small collection of cells in a petri dish. A video recorder projects what the microscope sees on a nearby monitor. The cells in the ...
Sep 20, 2011 |
4.8 / 5 (6) |
0
|
Many Americans approve of stem cell research for curing serious diseases
While research using human embryonic stem cells has roused political controversy for almost two decades, little has been done to scientifically assess American attitudes on the subject. New research from the ...
Jun 29, 2011 |
5 / 5 (1) |
2
Pollinators make critical contribution to healthy diets
Fruits and vegetables that provide the highest levels of vitamins and minerals to the human diet globally depend heavily on bees and other pollinating animals, according to a new study published in the international ...
Jun 24, 2011 |
4 / 5 (1) |
0
Cardiac cells might help fix heart attack damage
(AP) -- Scientists say they've found cells in the hearts of mice that can make new muscle after a heart attack, raising hopes that doctors can one day help the human heart repair itself.
Medicine & Health / Medical research
Jun 08, 2011 |
3 / 5 (1) |
0
Bedouin tribe reveals secrets to McGill's GA-JOE
Van Den Ende-Gupta syndrome (VDEGS) is an extremely rare genetic disorder that is characterized by distinctive head and facial features, such as unusual eyelids, narrow and beaked noses, flat nasal bridges, ...
Sep 30, 2010 |
4 / 5 (1) |
0
Muscle wasting in cancer does not spare the heart
The wasting disease associated with some cancers that is typically seen affecting skeletal muscles can also cause significant damage to the heart, new research in mice suggests.
Sep 08, 2010 |
not rated yet |
0
Largest ever epigenetics project launched
One of the most ambitious large-scale projects in Human Genetics has been launched today: Epitwin will capture the subtle epigenetic signatures that mark the differences between 5,000 twins on a scale and depth never before ...
Sep 06, 2010 |
5 / 5 (2) |
0
Scientists identify 95 genetic variants associated with cholesterol, triglycerides
A global team of researchers co-led by the University of Michigan School of Public Health has discovered or confirmed 95 regions of the human genome where genetic variants are associated with blood cholesterol and triglyceride ...
Aug 04, 2010 |
not rated yet |
0
|
Turning back the cellular clock
Cell reprogramming calls The Curious Case of Benjamin Button to mind.
Jun 29, 2010 |
4.7 / 5 (6) |
0
|
1000 Genomes Project releases pilot data
The completion of three pilot projects designed to determine how best to build an extremely detailed map of human genetic variation begins a new chapter in the international project called 1,000 Genomes, said the director ...
Jun 21, 2010 |
5 / 5 (2) |
0
WISE Telescope has Heart and Soul
(PhysOrg.com) -- NASA's Wide-field Infrared Survey Explorer, or WISE, has captured a huge mosaic of two bubbling clouds in space, known as the Heart and Soul nebulae. The space telescope, which has completed ...
May 24, 2010 |
4.9 / 5 (7) |
0
|
Human heart
The human heart provides a continuous blood circulation through the cardiac cycle and is one of the most vital organs in the human body. It is divided into four chambers: the two upper chambers are called the left and right atria and two lower chambers are called the right and left ventricles. Normally the right ventricle pumps the same blood amount into the lungs with each bit that the left ventricle pumps out. Physicians commonly refer to the right atrium and right ventricle together as the right heart and to the left atrium and ventricle as the left heart.
The electric energy that stimulates the heart occurs in the sinoatrial node, which produces a definite potential and then discharges, sending an impulse across the atria. The Purkinje fibers transmit the electric charge to the myocardium while the cells of the atrial walls transmit it from cell to cell, making the atrial syncytium.
The human heart and its disorders (cardiopathies) are studied primarily by cardiology.
For more information about Human heart, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
