Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most important in regards to the regulation of growth and development. Know the different hormones of animals in this tutorial...
This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutorial to know the specific physical changes that female and male bodies undergo as they turn into adults...
While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities of the unconscious mind. For more details, read this tutorial on sleep and dreams...