Shier, David. Hole"s human being Anatomy & Physiology. McGraw- Hill, 2002.

You are watching: How much does a human heart weigh in pounds

"Size=closed fist; 300g (adult)."300g
The human Heart. Texas love Institute, June 2004."The love weighs between 7 and also 15 ounces (200 come 425 grams) and also is a tiny larger than the dimension of her fist."200–425g
Paulsen S, Vetner M, Hagerup LM. Relationship in between heart weight and the overcome sectional area the the coronary ostia. National center for Biotechnological Information, September 1975."Sex sports in the area of the coronary ostia to be studied in hearts with a regular weight (heart weight much less than 400 g) and hypertrophic understanding (heart weight better than or same to 400 g).">400g
The Heart. The Franklin Institute science Museum, 1996."The average adult heart is about the dimension of a clenched fist and also weighs around 11 ounces (310 grams)."310g

The heart is a fairly small (no bigger than a clenched fist), hollow, muscular body organ which is in charge of pumping blood transparent the body and also to other organs. The is made up of 4 chambers, and also has a conical shape. The upper chambers are dubbed the left and right atria, and also the lower chambers are referred to as the left and right ventricles. The left and also right atria and also left and right ventricles room separated by a wall surface of muscle well-known as the septum. The strongest and biggest room in the love is the left ventricle. Its walls are only half-inch thick, and yet they are capable of advertise blood through a valve into your body. The is able come pump blood through blood vessels with small, recurring contractions.

The massive of a human heart is between 200–450g, however approximately 300g. However, this number can be exceptionally varied when the heart is diseased. A diseased heart have the right to sometimes sweet as lot as 1000g; an ext than 2 pounds! The human being heart is located in between the lungs and in around the center of the chest, contempt left that the chest bone. Roughly two thirds of its mass lies come the left the the body"s midlines. In an typical adult weighing around 80kg, (approximately 175pounds), the person heart is about 0.3% of the complete mass. Return the love is just a miniscule part of a person"s total weight, that plays the most important function in the whole body.

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