Heart

No you may not fully recover from a heart attack. The reason being is that the heart has cells that are amitotic. Amitotic cells cannot be replaced. Once a heart attack occurs some cells die and cannot be replaced making the heart weaker.

Blood comes into your heart through the veins all throughout the body, it enters the heart through the superior and inferior vena cava, leaves the heart though the pulmonary artery, enters the lungs, gets oxygen, enters the heart again through the pulmonary veins, and then leaves the heart and goes back throughout the body through the aorta.

So blood travels from the heart, to the lungs, back to the heart, than out the heart and all through the body.

The valves have to open to let blood flow into a chamber, and close before the blood flows back. If the valves do not open and close precisely on schedule, or if they fail to open or close completely, the blood will not flow efficiently. This can cause fluctuations in blood pressure, lack of flow to organs, or damage to the muscles of the heart.

For example, if the aortic valve between the heart and the aorta does not close after the left ventricle contracts, there will be back pressure into the ventricle, less blood pumped out of the heart, and lower pressure in the arteries.

to measure heart rate one could use an electrocardiogram

the human body is mainly salty water and so it conducts electrisity. the electrical activiy which spreads across the heart aslo spreads outwards away from the heart. this causes the voltage of the skin to change slightly. these potential differences can be detected by a electrocardiogram at various parts of the body

To put it simply, aside from the heart, kidneys and lungs are two of the most important organs affected. Over time, heart failure can lead to chronic renal failure as well as pulmonary edema (water in the lungs). It really is a simplified answer, as many other organs (such as liver) can get affected over time as well.

Source: http://answers.yahoo.com/question/index?qid=1006041106221

This can result in fainting or heart failure. Atrial fibrillation is abnormal heart palpitations. When the palpitations are abnormal, faster than usual, it can be very dangerous depending on the severity. You should check with your doctor to see the possible cause of this. This could be a result of carbon monoxide poisoning, high blood pressure, and many many more things. If this is a long term effect you may qualify for disability benefits.

• The two atrioventricular (AV) valves, which are between the atria and the ventricles, are the mitral valve and the tricuspid valve.
• The two semilunar (SL) valves, which are in the arteries leaving the heart, are the aortic valve and the pulmonary valve.

16-20 beats ... yeah with 16-20 bpm you would be dead within i dunno 16-20 seconds

if someone counted their own for that answer they must have lost count the average resting pulse rate for a teenage female average weight is 60-100 bpm anything above or below this is considered abnormal x

The left side of your heart is much stronger than the right because the blood that's in the left side of the heart needs to be pumped all over the body. Note also that blood that is pumped from the other side only needs to go to the lungs and there is not a huge distance from the heart to the lungs.

The heart is a organ that pumps blood all over the body. The right side receives blood (low in oxygen) from all over the body. The left side receives (oxygen rich) blood from the lungs. When blood is pumped all over the body, it loses its oxygen. After being pumped to all parts of the body, it returns to the heart and enters the right atrium and right ventricle. The blood is then pumped to the lungs and returns to the heart (this time on the left side). This blood (now rich in oxygen) flows all over the body. It looses its oxygen again and enters the heart on the right side and is then pumped to the lungs. Then the cycle starts again and again.

In a mirror.

Yes it does. Acetylcholine decreases the heart rate. It acts on the muscarinic (m2) receptor which decreases the activity of adenylate cyclase. This in turn decreases the production of cycliac AMP -> decreases the amount of protein kinase a activated -> decreases the amount of calcuim entry -> decreased activity of myocytes in heart- which results in decreased permeability of l type voltaged gated calcuim channels and decreases the length of time they are open for -> decreased calcuim levels -> decreased heart rate.

When there is a problem in blood flow there is the risk of cellular death. In the heart, this complication can be fatal, however, this may not be as problematic in the rest of the body depending on the size or the artery blocked.

When there is a problem in the blood flow of the heart, which is supplied by the coronary arteries, the myocytes of the heart can die. If a smaller artery in heart is blocked, this cell death can even go unnoticed, but will lead to the fibrosis of the heart tissue, not only making it less compliant, but potentially causing problems in the way the heart functions such as re-entry, which can lead to arrhythmias.

In the rest of the body, the blockage of a major vessel can be a big problem. However, if a small blood vessel is blocked the body may have collateral circuits to continue blood supply to tissue. An example of this is the internal thoracic arterty supplying posterior intercostal muscles through the anterior intercostal arteries if the posterior intercostal arteries become blocked.

So, blockage of blood vessels can lead to some big problems, especially in the heart; however, the body does have ways of supplying blood to tissues if they become blocked.

yes or true

Human body contains 5 liters of blood,if we consider 72 heart beats a minute,approximately 5040ml of blood flows through the heart every minute,so the blood circulate around the body once in a minute.

• Graspers, such as forceps
• Clamps and occluders for blood vessels and other organs
• Retractors, used to spread open skin, ribs and other tissue
• Distractors, positioners and stereotactic devices
• Mechanical cutters (scalpels, lancets, drill bits, rasps, trocars, Ligasure, etc.)
• Dilators and specula, for access to narrow passages or incisions
• Suction tips and tubes, for removal of bodily fluids
• Sealing devices, such as surgical staplers
• Irrigation and injection needles, tips and tubes, for introducing fluid
• Tyndallers, to help "wedge" open damaged tissues in the brain.
• Powered devices, such as drills, dermatomes
• Scopes and probes, including fiber optic endoscopes and tactile probes
• Carriers and appliers for optical, electronic and mechanical devices
• Ultrasound tissue disruptors, cryotomes and cutting laser guides
• Measurement devices, such as rulers and calipers

A cardiac surgeon with additional training in transplant surgery will be consulted to perform the operation.

The heart is the bodies blood pump. Blood with a low oxygen level enters the heart at the right atria where it is pumped to the right ventricle and then out of the heart through the pulmonary artery ( the only artery in the body that contains low oxygenated blood) and to the lungs. While in the lungs, the blood enters the alveoli where it off loads carbon dioxide molecules and up loads oxygen molecules. The now oxygenated blood returns to the heart into the left atria, is pumped to the left ventricle and then out to the body through the Aorta where it supplies the oxygen to the bodies cells and collects carbon dioxide and other wastes. The cycle begins again.

The left and right atriums of the heart is at the top portion and the blood is pumped through the lower left and right ventricles.

Your heart beats faster when running as In order to move faster the muscles in your legs require more energy. Energy is released to the muscles by a process known as respiration, which requires oxygen to occur. Oxygen is delivered to the muscles for respiration via the blood pumped by the heart. In conclusion your heart beats faster whilst running as your body's muscles require more oxygen for respiration to deliver the necessary energy required for running.

The Egyptians back in the 14th century may have written about Heart Attacks and presumed they were a disease. In the BMJ (British Medical Journal) the detailed writings of Dr. Andrew Rae Gilchrist CBE denote the first true understanding of Heart Disease in modern medical culture.

No. The heart undergoes cleaning in the Kidney. In the kidney the blood is filtered and re-filtered many times to remove most impurities that the blood does not need. Research the kidney and you will get your answer! All the heart does is pump the blood around the body! Hope this helps!

A respiratory control center at the base of your brain controls your breathing. This center sends ongoing signals down your spine and to the nerves of the muscles involved in breathing.

These signals ensure your breathing muscles contract (tighten) and relax regularly. This allows your breathing to happen automatically, without you being aware of it.

To a limited degree, you can change your breathing rate, such as by breathing faster or holding your breath. Your emotions also can change your breathing. For example, being scared or angry can affect your breathing pattern.

Your breathing will change depending on how active you are and the condition of the air around you. For example, you need to breathe more often when you do physical activity. In contrast, your body needs to restrict how much air you breathe if the air contains irritants or toxins.

To adjust your breathing to changing needs, your body has many sensors in your brain, blood vessels, muscles, and lungs.

Sensors in the brain and in two major blood vessels (the carotid (ka-ROT-id) artery and the aorta) detect carbon dioxide or oxygen levels in your blood and change your breathing rate as needed.

Sensors in the airways detect lung irritants. The sensors can trigger sneezing or coughing. In people who have Asthma, the sensors may cause the muscles around the airways in the lungs to contract. This makes the airways smaller.

Sensors in the alveoli (air sacs) detect a buildup of fluid in the lung tissues. These sensors are thought to trigger rapid, shallow breathing.

Sensors in your joints and muscles detect movement of your arms or legs. These sensors may play a role in increasing your breathing rate when you're physically active.

The heart acts as a powerful pump to push the blood through the veins, arteries & capillaries to carry oxygen & sugar to fuel the muscles & organs that keep us alive; then carries the depleted blood to the lungs to pick up oxygen & the intestines to replenish the sugar