Difference Between Left and Right Ventricle

Human Heart and Circulatory System - Introduction to Left Ventricle and Right Ventricle

Human heart is the major organ involved in the double circulatory system and it is called double because here, the blood passes through the heart twice per circuit. The left pump sends the fresh oxygenated blood around the body and on the other hand, the right pump sends deoxygenated blood to the lungs where it becomes oxygenated and flows back to the heart. 

Thus, oxygenated and deoxygenated blood in human beings are separately flowing and makes the circulatory system more efficient which also helps in maintaining the constant temperature of the body. Below are the four heart chambers that have important roles in the double circulation in human beings; we can observe from the following the difference between the functions of the left and right ventricles.

  • Left Atrium: Receives oxygenated blood from lungs which contain oxygen.

  • Right Atrium: It receives deoxygenated blood that contains CO₂ as the byproduct of metabolism.

  • Left Ventricle: It also receives oxygenated blood coming from the left atrium via a bi-cuspid valve.

  • Right Ventricle: It receives deoxygenated blood consisting of CO₂ from the right atrium via the tricuspid valve.

  • Human Heart consists of four chambers consisting of an auricle and ventricle. Ventricles are of two types, namely, left and right ventricle occupying two chambers; auricles or atrium is also of two types, namely, left atrium and right atrium.

  • A ventricle is part of our heart and it is one of the two large chambers located towards the bottom of the heart. Its function is to collect and expel blood that is received from an atrium towards the peripheral beds within the lungs and body. 

  • To know about the atrium or auricle, it is an adjacent upper heart chamber that primes the pumping and it is smaller and has thinner muscular walls than a ventricle.

  • All these four chambers are parts of the circulatory system of our body which is helpful in supplying nutrients and oxygen to the body tissues and organs. It will also be helpful in removing body wastes and carbon dioxide from the body.

  • In this article, we will discuss the left ventricle and right ventricle and the differences between the right and left ventricles of the heart. 

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Structure of the Ventricles 

  • Ventricles have thicker walls than the atria and are known to generate higher blood pressures. The physiological load on the ventricles is much greater to pump the blood throughout the body and lungs as compared to the pressure generated by the atria to fill the ventricles.

  • Further, the left ventricle is known to have thicker walls than the right ventricle and it is helpful in pumping blood to almost all parts of the body whereas the right ventricles fill only the lungs.

  • Ventricles have irregular muscular columns called trabeculae carnage on the inner walls and these cover all of the inner ventricular surfaces except the right ventricle’s conus arteriosus. 

  • According to magnetic resonance imaging, the mass of the left ventricle is estimated to be 143 g where 38.4 g is variable.

  • The right and left ventricles are equal in size and comprise roughly 85 milliliters in the adult. Its upper surface can be found circular and convex and the under surface is flattened.

  • Ventricular bulges into the right ventricle where a transverse section of the cavity presents a semilunar outline. 

  • There is a tendinous band known as the tendon of the conus arteriosus that extends upward from the right atrioventricular fibrous ring. The ring mentioned here connects the posterior surface of the band to the aorta.


Shape of the Left and Right Ventricles

  1. The left ventricle is lengthier and more conical in shape than the right ventricle, and on the transverse section, its concavity presents an oval or nearly circular outline. It is a considerable part of the heart’s diaphragmatic surface and it forms a small part of the sternocostal surface; it also forms the apex of the heart. 

  2. The left ventricle is thicker and muscular as compared to the right ventricle because it pumps blood at a higher pressure.

  3. The right ventricle is triangular in shape and it extends from the tricuspid valve in the right atrium to near the apex of the heart. Its wall is found thickest at the apex and thin towards its base at the atrium.


The left and right ventricle is a very important chapter in Biology. Students should keep in mind to cover this topic without any doubts because questions might be given regarding this chapter in exams. So, it is recommended to have a clear idea of this chapter. In order to ace this chapter, we at Vedantu have some tips to which the student can keep in their mind. These points might help the students to have the chapter cleared easily.

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FAQs on Difference Between Left and Right Ventricle

1. What are the important parts of the human heart?

The Human Heart has Four Chambers Which are Known As:

  • Right and left ventricles 

  • Right and left Atrium

  • The right and left ventricles are the lower chambers in the heart.

  • Right and left ventricles have different functions in the heart

  • The deoxygenated blood from the right atrium is received by the right ventricle and it pumps into the pulmonary artery.

  • Oxygen-rich blood is received by the left ventricle from the left atrium and pumps to the aorta.

  • The left ventricle wall is thicker and the right ventricle has a thin wall.

  • The left ventricle pumps the blood in higher pressure because the wall is thicker than the right ventricle.

Symptoms of Right Ventricular Dysfunction:

  • Pain in the chest.

  • Continuous Coughing.

  • Fainting during exercise.

  • Bluish color can be seen in fingers and lips.

  • Lightheadedness.

  • Shortness of breath or breathing problems.

  • There can be swelling in the feet and ankles.

  • Pulmonary hypertension is the common dysfunction of the right ventricle.

  • The pressure in which blood is pumped by each ventricle is the main difference.

2. How can Vedantu help in scoring good marks in the exam?

  • Students should study the chapter in the book and understand it. There are some terms in this chapter that might be difficult for some to try to understand the terms, concepts, and functions of the term so that that will help them to remember.

  • Teachers may teach in the class by showing the diagram of heart, students should listen very carefully because in many cases students tend to mix the functions with other terms and this will make their concept wrong so they should listen and understand the chapter more carefully.

  • Practice the diagram of the heart and label the right, left ventricle, and right-left atrium. While practicing the diagram students can write the functions of each at the side while labeling them this is for their reference purpose. So that while revising it will be easier.

  • Make notes while studying the chapter, write and learn the functions of the heart and how it works, the chambers in the heart, its functions and how it works, etc. Cover the main topics and terms in the notes.

  • Students can watch the videos related to this chapter and get a clear knowledge of how the heart works and functions in the body. Visual representation helps the students to remember things more effectively. It is more like watching a movie and remembering it.

  • Students can face some doubts regarding this topic which can be asked to their respective teachers and have their doubts cleared. Students are recommended to have external guidance so that they might help in the preparation for their exams.

  • Have a discussion in class regarding this topic which will be beneficial to others too. By making the chapter understandable to others, students can have a revision on this topic. This is the easiest way to revise the chapter.

  • Solve the questions given in the textbook and always have the solutions to the questions because they will help the students to have the correct answers. Try solving the previous year's questions because they might have an idea of important topics of different chapters.

  • Always practice the diagram because in exams they might ask to draw the diagram of the heart and to label it. These types of questions are very easy to secure marks so students are recommended not to leave these questions.

  • Another important topic in this chapter is the difference of left and right ventricles, students should make notes regarding this to remember the difference without mixing the functions with each other and they can have the topic cleared by the teachers.

  • Students can refer to Vedantu’s study materials available on the website. It will help them to prepare for their exams.

  • Online tutoring classes are also available in Vedantu where the student can enroll in interactive classes and can clear the doubts which they have.

  • Students can download the previous year's questions from the website of Vedantu and can practice testing their knowledge regarding this topic. They can even download the solutions to it from the website of Vedantu.

3. What is the Difference Between Left Ventricle and Right Ventricle?

Left Ventricle

Right Ventricle

Blood Received

It receives oxygen-rich blood from the left atrium of the heart.

It receives deoxygenated blood from the right atrium.


It consists of a thicker wall.

It consists of a thin wall.


It pumps the blood received to the whole body through the aorta.

It pumps the received blood to the lungs through a pulmonary trunk.

Shape of Cavity

Its cavity is circular in shape.

Its cavity is crescentic in shape.


It develops higher pressure while pumping blood.

It develops a lower pressure as compared to the left ventricle while pumping blood.

The Shape of the Chamber

It is oval in shape and forms an apex of the heart.

It is triangular in shape and is situated near the apex of the heart. 

4. What is Auricle? Are Auricle and Atrium Both the Same?

An auricle is used interchangeably for atrium or atria (plural name). It is the upper heart chamber and is of two types, namely, left auricle and right auricle. The former receives the oxygenated blood from the lungs and the latter receives deoxygenated blood received as the byproduct of metabolic processes.

5. What is the Main Difference Between the Left and Right Ventricle?

Left and right ventricles are situated at the bottom side of the heart and these make up two chambers of the heart; the other two are the left atrium and right atrium. The left ventricle and right ventricle collectively make the apex of the heart and the major difference between them is the pressure of the blood by which each of the ventricles pumps blood.

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