Reviewing the Anatomy of the Heart, Starting from the Section to Its Function

Reviewing the Anatomy of the Heart, Starting from the Section to Its Function

Reviewing the Anatomy of the Heart, Starting from the Section to Its Function


Reviewing the Anatomy of the Heart, Starting from the Section to Its Function

The heart is a vital part of your body that is responsible for receiving and pumping blood throughout the body. This organ has a size that is slightly larger than your fist, which is around 200-425 grams. The location of the heart is between the lungs, in the middle of the chest, precisely on the left back of the breastbone. For more details, here is the anatomy of the heart as well as an explanation of its parts and functions.

Parts of the heart and their functions

Intrigued how can an organ which is no more than a fist be able to trash blood throughout the body? Following is a brief description of heart anatomy and its function.


The heart is in a fluid-filled cavity called the pericardial cavity. This wall and layer of the pericardial cavity is called the pericardium. Pericardium is a type of serous membrane that produces serous fluid to lubricate the heart during pulsing and prevents painful friction between the heart and surrounding organs. This part also serves to support and hold the heart in place. The heart wall consists of three layers namely epicardium (outermost layer), myocardium (middle layer), and endocardium (inner layer).


The porch or also called the atrium is the upper part of the heart which consists of the right and left chambers. Right porch functions to receive dirty blood from the body carried by blood vessels. While left porch functions to receive clean blood from the lungs. Serambi has thinner and not muscular walls because its job is only as a blood receiving room.


Same as the porch, cubicle or also called the ventricle is the lower heart part which consists of the right and left parts. Right chamber serves to pump dirty blood from the heart to the lungs. Meanwhile, left ventricle serves to pump clean blood from the heart throughout the body. The wall of the cubicle is much thicker and more muscular than the porch because it works harder to pump blood both from the heart to the lungs and throughout the body.

Reviewing the Anatomy of the Heart, Starting from the Section to Its Function


The heart has four valves that keep blood flowing in one direction, namely:

  • Tricuspid valve, regulates blood flow between the right foyer and the right chamber.
  • Pulmonary valve, regulates blood flow from the right ventricle to the pulmonary artery which carries blood to the lungs to extract oxygen.
  • Mitral valve, flows oxygen-rich blood from the lungs to flow from the left porch to the left ventricle.
  • Aortic valve, paves the way for oxygen-rich blood to be passed from the left ventricle to the aorta (the largest artery in the body).

Blood vessels

There are three main blood vessels in the heart, namely:

  • Arterial , carrying oxygen-rich blood from the heart to other body parts. Arteries have walls that are elastic enough to keep blood pressure consistent.
  • Veins , these blood vessels carry oxygen-poor blood from the entire body to return to the heart. Compared to arteries, veins have thinner vessel walls.
  • Capillary , this blood vessel is responsible for connecting the smallest artery with the smallest vein. The walls are so thin that it allows blood vessels to exchange compounds with surrounding tissue, such as carbon dioxide, water, oxygen, waste, and nutrients.

Heart cycle

Heart cycles are a sequence of events that occur when the heart beats. The following are two phases of the heart cycle, namely:

  • Systole, heart muscle tissue contracts to pump blood out of the ventricles.
  • Diastol , the heart muscle relaxes when filling blood in the heart

Blood pressure increases in the main artery during ventricular systole and decreases during ventricular diastole. This causes 2 numbers associated with systolic blood pressure is a higher number and diastolic blood pressure is a lower number. For example, a blood pressure of 120/80 mmHg describes systolic pressure (120) and diastolic pressure (80).

Various diseases that can cause heart problems

Heart disease is a term that includes any heart problems. The following are various disorders of the heart, including:

  • Arrhythmia, irregular heartbeat.
  • Coronary arteries, occur due to a buildup of plaque that clogs blood flow in the coronary arteries.
  • Heart failure, occurs when the heart is unable to pump blood throughout the body effectively.
  • Dilated cardiomyopathy, occurs when the heart chambers widen due to weakening of the heart muscle so that it cannot pump blood properly.
  • Hypertrophic cardiomyopathy, is a genetic disorder that occurs when the left ventricle thickens making it difficult for blood to be pumped out of the heart.
  • Pulmonary stenosis, occurs when the pulmonary valve is difficult to open, making it difficult for the heart to pump blood from the right chamber to the pulmonary artery.

Also Read:

  • Get to know the 4 stages of infant heart development, from fetus to birth
  • Detect Your Heart Health With These 4 Types of Blood Tests
  • Beware, Research Reveals the Dangers of Liquid Vape for Heart Health
  • Not Just Chest Pain, Too Much Sweating Can Be A Symptom Of Heart Disorders


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