And secondly, testes also play a role as an endocrine gland and that means they are capable, capable of releasing and producing specialized hormones that are required by our body. Now, in this lecture we're going to focus on the latter. We're going to focus on the endocrine capability of testes. Now, if we take a cross section of the testes we basically get the following diagram. And within this diagram we have a specialized section known as the Simoniferous tubules. And this is what we're going to focus on in this lecture.