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Heart
The heart is a major organ of the body that is found in the circulatory system. It pumps blood throughout the blood vessels. Questions related to the heart should be put here.
8,781 Questions
Atherosclerotic Plaque is an irregular accumulation of cholesterol and fat. When plaque is present in the coronary artery, a heart attack is likely to occur because of restricted blood flow.
Is a stroke a heart disease or disorder?
A stroke occurs when there is a blocked vessel in the brain. If there is a blockage, no oxygen will pass through, thus a stroke occurs. It's not a heart disease nor is it a disorder.
WHICH SIDE of heart contains oxygenated blood?
The left side of the heart
Blood enters the left atrium from the pulmonary veins of the lungs and the left ventricle then pumps the oxygenated blood to the rest of the body. Considering the left side must supply the entire body, it is more muscular.
What is size of the heart for kids?
Your heart obviously grows as you age. Your heart is supposedly to be the size of your fist.
Can you show where my heart is on my body?
The heart is a muscular organ located slightly to left side of and behind the breastbone. It is the size of a fist.
Which human heart chamber has to contract more forcefully?
The heart is a complex structure. It receives deoxygenated blood from the superior and inferior vena cavas who transfer it to the right auricle. The right auricle due to excessive receival of impure blood, swells up and transfers it to the right ventricle. Although the left auricle and ventricle too perform contraction, the receival by the right side is enormous. It thus, contracts more forcefully compared to the left side.
heart attack
Are the kidneys distal to the heart?
No the kidneys are proximal to the bladder. The urethra is distal to the bladder.
Why heart is only on the left side of the human body?
Yes, but only slightly - it's a lot closer to the middle than most people think. About two-thirds of the heart are on the left side, and one-third on the right side. Of course, there is the odd person who has their heart on their right side.
Why does a heart have the shape it has when a human heart is a totally different shape?
The origin of the 'heart' symbol is still up for debate.
If viewed from a certain angle, the human heart can indeed look like the typical heart shape. So it might have originated from rough attempts to draw that shape.
What is the main difference between a human heart and a cows heart?
The cow heart is bigger than the human heart.
How does the brain tell the heart to pump?
What will the brain tell your heart to do?Your brain will tell your heart to beat thereby allowing you to breath and live.
What drugs are heart transplant recipients given?
Heart transplant recipients are given immunosuppressive drugs to prevent the body from rejecting the new heart.
Where does the heart carry the waste?
The heart beats faster in order to eliminate extra waste. This usually occurs while active, like exercise for example. Notice how you have an increased heart-rate? That's because the muscles (such as your heart) need to work overtime to pump blood that carry nutrients to the heart, and the waste away from the heart. This process needs to occur more rapidly when active, thus the heart works faster.
Is crying good for your heart?
A tear is a drop of clear saline fluid secreted by the lacrimal gland (which is near your eye tip--nearest to the nose). It is surprising to know that we have different kinds of tears with different composition! Yes! To be specific there are three types. Here they are:
Basal tears: These tears are always there making your eyes watery and not dry! They contain antimicrobial enzymes and some lipids which clears the dust of the eye, fight against bacterial infection and keep it lubricated.
Reflex tears: Have you ever yawned and see tears coming out? Or maybe coughed? Or maybe you had chilly? Or bright light? Or have you experienced a vegetable (onion) making you tear up? These are all examples of reflex tears, we can't control them and they actually appear when there is a trigger on a nerve called ophthalmic. The function is to wash out any irritants that may have come contact with your eye.
Psychic tears: These tears are caused by your brain (limbic system) in respond to your emotions. When a toddler cries because you didn't give her chocolate. Or when parents are so happy to see their son got a job. Or when we experience intense anger, depression.. or any other strong emotional response (both positive and negative). These tears contain more hormones like prolactin, adrenocorticotropic hormone, and leucine enkephalin (a natural pain killer).
Extra Note: Psychic tears are very healthy and they can mean a lot. Socially, it is a sign that someone needs you to be close to them either by sharing their happiness or sorrows. Biologically, a stressed person, releasing cortisol--the stress hormone and leucin enkephalin and other hormones can make you feel a lot better. Psychologically, Freudian theory suggests that, letting out your emotions is beneficial and prevent tension build up, a research reveals 88.8% of people feel better and more manageable after a good cry, with an exception of people who are suffering a mood disorder.
Interesting fact: Women cry 47 times more than men every year. Studies suggest that, it is due to an increase of testosterone in men, since before puberty the number of crying is almost the same.
What was the function of fat surrounding the heart?
Many times things that have fat around them need the fat for protection.
Where does the heart muscle get its own blood supply?
The heart is supplied with blood from the superior vena cava (the large vein that flows to the right atrium). This vein carries blood from the systemic circuit (from the body) to the heart so that blood may be oxygenated and recirculated.
Do atrioventricular vales prevent backflow into the heart?
yes, they get it back by pumping blood to the 4 parts of your heart. when you inhale, it makes rich blood when you exhale it takes out poor blood which turns into carbon dioxide.
