In this article we will discuss about the composition of faeces in human body. The chyme derived from the first food intake requires 36 hours for its solidification to be converted into solid residual matter known as faeces. Roughly about 150 gm of solid stool is passed in 24 hours. If vegetable, coarse cereals and cellulose be excluded from the [...]
In this article we will discuss about the roles of different organs in excretion. Role of Lungs in Excretion: Human lungs regularly remove about 18 L of CO2 per hour and about 400 ml of water per day in normal resting condition. Water loss through the lungs is small in hot humid climate and large in cold dry climate. Thus [...]
In this article we will discuss about:- 1. Definition of Excretion 2. Modes of Excretion 3. Other Excretory Wastes. Definition of Excretion: It is the elimination of metabolic waste products from the animal body to regulate the composition of the body fluids and tissues. The terms excretion and defecation should not be confused. Defecation is the removal of wastes and [...]