Have you ever noticed what encourages the air to move in and out of our lungs? In the previous lesson, we discussed the process of gas...

Do you know how diffusion of gasses occurs between the alveoli and capillary walls? In the previous lesson we discussed how air reaches...

Do you know how air reaches the lungs in human body? In the previous lesson we discussed the types of respiration in human body ( click...

Do you know how our body gets energy? Our body gets energy through the process of respiration. In this lesson, we will discuss the...

Did you know that cells have different features which help them to perform their functions? In the previous lesson we learnt about the...

In this lesson, we will go through the risk factors which cause coronary diseases. Learn more about these risk factors!

In the previous lesson, ( to see the first lesson on circulatory system click here) we studied the structure of the main blood vessels...

In this lesson, we will go through how blood is transferred from body to heart and then from heart to body.

In the previous lessons we discussed the absorption of food molecules into the blood (click here). In this lesson we will learn about the...

How does the digested food particles go into the body cells? In this lesson, we will learn about the third stage of the digestive system,...

Stomach has a major part in digestion. Do you know what stomach digests? In this lesson, you will learn about digestion in the stomach...

In the previous lesson we discussed how the food enters the body, and how it is pushed along the gut. In this lesson we will discuss the...

Do you know how do we get energy from our food? In this lesson we will learn about what is nutrition, ingestion and how does the food...

From which part of your oral cavity do you take in the food? There are your teeth which help in the ingestion of food. Do you know how it...

Did you ever think about how water and minerals ions travel from roots to the leaves? And what happens to them in the leaves? In this...

A cell is a unit of life. In this lesson we will start cell and it's structure. We will also discuss the functions of nucleus , cytoplasm...

Do you know how to identify different organisms? To separate different organisms on the basis of differences? In this lesson we will go...

We have learnt about diffusion and osmosis in the previous lessons. In this lesson we will learn about active transport and its...

Catalysts are the substances that speed up a chemical reaction but remain unchanged at the end of the reaction. Do you know what speeds...

Heart is an important organ in our body. It is located on the middle left-side of the chest. Well heart's important job is to pump blood...