How much heart weigh

Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Organ weight is a complex subject. There are many factors—including body weight, height, lean body mass, and race—that cause organ weights to vary widely.

To figure out accurate ranges for organ weights, a lot more data need to be collected. Furthermore, this data needs to come from different types of people. Right now, such data are not routinely collected. Organ weights used for reference need to come from forensic autopsies , which are usually performed in cases of suspicious, sudden, or traumatic death where a dead person's organs are otherwise healthy.

Furthermore, the number of autopsies performed is plummeting, giving researchers fewer opportunities to access and assess organ weights. Despite being poorly appreciated and minimally researched, organ weights and size are still used by healthcare professionals to determine the cause of death and disease as well as to guide certain treatments. In , French researcher Grandmaison and co-authors published a paper in Forensic Science International analyzing organ weights from autopsies performed on whites between and Based on the results of this study, the following are mean organ weights and ranges for men and women:.

To some extent, these values lack generalizability and can't automatically be applied to all people in a population. Even though humans change very slowly over time, the results of this study are already dated. However, the sample size of this study is small and the results are somewhat dated. According to the formula, a woman who carries 40 pounds of total body fat would have breasts that weight about 1.

Furthermore, histological changes in the composition of the breasts can sometimes affect breast weight. It has to do with the density of the tissue —and fat is very low density. However, the effect of fibrocystic , adenomatous, or tumorigenic changes on breast weight is relative.

In one person, that tumor may represent a third of her breast mass, and in another person, that tumor may represent less than one percent of her breast mass.

Besides disease, another important factor that affects breast mass is diet and exercise. When people lose weight, they tend to do so uniformly. For example, if a pear-shaped woman were to lose weight, she would still retain her pear shape but at a smaller mass. She would be proportionately smaller. A woman who loses weight will not experience a conspicuous decrease in breast size. Her breasts would be appropriate for her new weight and in proportion with the rest of her body— everything would just be smaller.

On a related note, as with the breasts, people lose a proportional amount of weight from the buttocks while dieting. Research shows that people who are taller, weigh more have a higher body mass index, or BMI , and have more lean body mass may have heavier organs. Of these factors, some research suggests that height may best correlate with most organ weights; taller people have organs that weigh more and are proportionately bigger.

Heart weight can be majorly affected by BMI, with obese people having heavier hearts. Interestingly, female thyroid weight has little to do with height, weight, and lean body mass. Instead, female thyroid weight may be most influenced by iodine intake. In areas where the vast majority of women consume enough iodine in their diets, thyroid weights typically fall within a uniform range for all women. Age and sex also affect organ weight.

On average, women tend to have lighter organs than men do. Furthermore, as with lean body mass, organ weights tend to decrease with age. Age-related decreases in organ weight are particularly noticeable in brain mass. Results from a study published in Der Pathologe— and based on more than autopsies—suggest that the average brain weight in men without brain disease is grams and the average brain weight in women without brain disease is grams.

The researchers also found that, on average, male brain weight decreases by 2. In other words, your brain gets lighter over time. One physical parameter that exerts an unclear effect on organ weight is obesity.

The right coronary artery branches out on the right side of the aorta. Blockage of any of these arteries can cause a heart attack , or damage to the heart muscle, Phillips said. A heart attack is distinct from cardiac arrest, which is a sudden loss of heart function that usually occurs as a result of electrical disturbances of the heart rhythm.

A heart attack can lead to cardiac arrest, but the latter can also be caused by other problems, he said. Related: Do other animals get heart attacks? The heart contains electrical "pacemaker" cells, which cause it to contract — producing a heartbeat. In people with an irregular heartbeat, or atrial fibrillation, every cell tries to be the band leader, he said, which causes them to beat out of sync with one another. A healthy heart contraction happens in five stages. In the first stage early diastole , the heart is relaxed.

Then the atrium contracts atrial systole to push blood into the ventricle. Next, the ventricles start contracting without changing volume. Then the ventricles continue contracting while empty. Finally, the ventricles stop contracting and relax. Then the cycle repeats. Valves prevent backflow, keeping the blood flowing in one direction through the heart. By the end of the day, your heart will have beaten around , times around 60 to 80 beats per minute.

The heart and circulatory system make up your cardiovascular system. Your heart works as a pump that pushes blood to the organs, tissues, and cells of your body. Blood delivers oxygen and nutrients to every cell and removes the carbon dioxide and waste products made by those cells.

Blood is carried from your heart to the rest of your body through a complex network of arteries, arterioles, and capillaries. Blood is returned to your heart through venules and veins. If all the vessels of this network in your body were laid end-to-end, they would extend for about 60, miles more than 96, kilometers , which is far enough to circle the earth more than twice! Visit U.