Are you having trouble writing an essay outline on human heart? Would you like to learn some tips to help you out? If your answer is yes, then this article is for you. In this article, we shall discuss an essay outline on the human heart. The article will bring out most of the heart’s functionalities and the different heart partition valves, and so on. If you wish to learn more about this topic, then follow along and let us venture into this amazing body part.
The heart is a pretty crucial body part and also a rather vital topic in biology. An essay on the matter is mostly challenging to students. That is why we researched this specific essay to help you out. Without further ado, let us dive into it.
The human heart structure
The heart has a pinkish color. It has an approximate size of the human fist with an approximate weight of three hundred grams. However, the male’s heart is about 25% bigger compared to the female heart.
The heart is hollow and pretty muscular. It has the shape of a cone and is located on the humans’ thoracic cavity, which is found above your diaphragm; it is between the lungs, to be precise.
Your ribs act as a shield for your heart. The heart cone pointed side faces the left of your body. Hence when you perform a tedious exercise, you might think that your heart is positioned on the left side of your chest. However, the fact is that your heart is positioned in the middle of your chest. In this position, the rib cage can act as a strong shield.
The hearts external structure
Two layers of tissues membrane known as pericardium cover the heart.
The pericardial fluid fills up the space which is in between this two layers. With this fluid in place, your heart stays shielded from:
- External pressure
It also reduces friction when your heart is beating and facilitates the heart’s free contraction, which is crucial.
The hearts internal structure
The inner portion of the heart has a couple of parts which include:
- Outer pericardial
- Middle myocardial
- Inner endocardial layers, this layer corresponds to:
- Tunica adventitia
- Tunica media
- Tunica internal
- Are in respect to the blood vessel layer
The heart has 4 chambers. The two chambers, right and left auricles, are divided by the inter auricular septum to have the right and left auricle. The auricles have thin walls and come in a pair, left and right. They are located on the top part of the heart or the heart’s upper chambers in total.
The right auricle gets deoxygenated blood which comes from your body parts via the posterior and anterior vena cava.
Those remaining two chambers are known as the ventricles. They are pretty thick, thicker than the auricle due to their functionality. They are found on the base of the heart. The ventricles also come in a pair: the right and the left.
The ventricles are divided by the interventricular septum. The left ventricle is thicker than compared to the right one. The reason for this is that it is used to pump the blood for a longer distance. I mean, it pumps blood up to your brain and all against gravity.
Our heart has the following muscles, the Chordae tendinae plus the papillary muscles for your left ventricle. The function of these two muscle is to help prevent bicuspid and tricuspid valves from the push into the auricle during a ventricular contraction.
The blood vessels leaving and entering your heart
- Superior vena cava
- Posterior vena cava
- Pulmonary artery
- Pulmonary vein
- Coronary arteries
For more information on the heart’s functionality, you can check out the human heart scholarly article.
We hope this short essay on human heart will help you understand the concept of the topic. We have made it pretty easy for easier understanding.