 Well, next topic is the mammary glands and the production of milk, in case of example guitar pe human li rahin. So the mammary glands, they are in fact, they are modified sweat glands, they are modified sweat glands. So mammary glands produce and secrete milk yet though different process of production of milk and then the secretion of milk. Now they contain varying amounts of adipose tissue. So the amount of adipose tissue in fact determines the size of the breasts, but the amount of mammary tissue does not vary widely from one woman to another. So this means that the adipose tissue is the size of the mammary glands depends. Now the basic components of the mammary gland are the alveoli, which are hollow cavities, a few millimetre, that is large, lined with milk secreting the boiled cells. Now these alveoli that join up to form groups known as the lobules and each lobule has a lectiferous duct that drains into the opening and the nipple. So the production of milk moves up to the point at the tip of the nipple from which milk oozes out. So the structurally we can see that this is the lateral view showing internal structure whereas this is the front view. So let's say we started from here, there is a fat tissue, but inside the lactating structure or tissue that doesn't vary too much. And these are the alveoli, these are the alveoli and these alveoli they are grouping together to form the lobules. There is a tissue which in fact that forms the milk and then these lectiferous ducts and these lectiferous ducts are very close to the outside of the nipple that are present in the lectiferous sinuses where milk is collected and then it comes out of the nipple by the settling of the child. Now the lobules we have seen diagrammatically and there are many lobules which are grouped together to form, there are many lobules which make 15 to 20 lobes, there are 15 to 20 lobes. So there are lobes then they are composed of they into the lobules, lobules they are converted into the milk forming tissue, lectiferous tissue or lectiferous duct then it comes out of the body. So these are the structure and the production of milk or the production of milk in particular that is under the control of the hormone or it always the production of milk takes place at the birth of the child so it is a hormonically is the attachment of the milk production and then milk ejection. So this is all about the memory plans.