Jun 11, 2018 · The main organ is the heart. The heart constantly pumps blood throughout the body. The blood travels through blood vessels which are organs of the circulatory system.

Sep 13, 2016 · Heart. The process of cell division and cellular differentiation of embryo during the early stages of development is called embryogenesis. The development of organs start during the third week of embryogenesis and is called organogenesis. The heart is the first functional organ to develop and starts to beat and pump blood at around 21 - 22 days. It develops as a horse shoe shaped area , near ...

Sep 10, 2016 · Here's my list, starting with the heaviest organ. > 1. Skin (From dianemadfes.com) Average weight: 4 kg to 11 kg Function: protects all the inner body organs. 2. Intestines (From www.healthtap.com) Average weight: 2.0 kg Function: digestion and absorption of food, extraction of fluids; excretion of waste. 3. Liver (From www.huffingtonpost.com) Average weight: 1.6 kg Function: breaks down ...

Dec 29, 2015 · It is either the stomach, the liver, or the intestines. Since you said: about the level with the belly button, it should be the intestines.

Nov 13, 2017 · As shown below: http://www.organsofthebody.com/small-intestine/ The ascending colon travels up the right side of the body and the descending one travels down on the ...

Jul 4, 2016 · Cardiac muscle is present only in heart wall and no where else. Skeletal and smooth muscles are distributed in various parts of the body. Skeletal muscles remain attached to movable bones and these are voluntary muscles.

Jan 11, 2017 · Let's first talk about what an organ is - which is a group of millions of cells which work together to perform a certain function. While there is debate over how many organs humans have (because of the loose definition, some people will call something an organ while others won't), a reasonable number is 78. And so now we come to the question - of these 78 organs, which is the most useless ...

How does blood get oxygenated in the heart? The right atrium receives deoxygenated blood, the left atrium receives oxygenated. How does the blood receive the oxygen?

Dec 1, 2017 · Analogous means that something is comparable to something else, which is used a lot in evolution. So really it could be called comparative anatomy. The evolution theory in biology says that structures in many species of life have the same purpose but are evolved separately. So two animals have the same type of structures with the same function, but are not from the same ancestor millions of ...

Feb 12, 2016 · Myocardium Human heart has three layers in its wall. They are, from inside outwards : Endocardium Myocardium Pericardium Of these three layers, the endocardium is an endothelial lining. The myocardium is composed of cardiac muscle and the pericardium is the fibro-serous covering of the heart.