This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three brain division elaborated in this tutorial. Discover what these are, their components and functions...
Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you will find the basic structure of a neuron, the different classes of neurons, and membrane potentials. It also includes the structure of the nervous system...
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and development. Certain chemicals though can halt growth, e.g. herbicides in plants, or affect normal physiological activities, e.g. alcohol. For more info, read this tutorial on the effects of chemicals on plants and animals...
Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water available for cells to absorb. Take a look at this tutorial to know how the body regulates blood sugar levels and temperature...