With all the amazing facets of our bodies, how do they work all together? Our body systems interact making the human body the most complex machine ever built. Learn about how the nervous, reproductive, digestive, excretory, circulatory, respiratory, muscular, immune and skeletal systems work together to perform all of our daily activities. Vivid graphics and images illustrate the interrelationship of the body systems.
Humans, like all other animals, reproduce and the process is no less fascinating. Our reproductive and endocrine systems are key components in the continuation of the human race. Learn about the male and female reproductive organs, and study key reproductive functions such as the ovarian cycle and fertilization of an egg. The reproductive process is illustrated with vivid graphics. Learn also about how the endocrine system works in conjunction with the reproductive system.
Our bones serve many purposes. Find out more about the five functions of the skeletal system: form, movement, protection, mineral storage and marrow production. See the inner workings of bones and how they interact with our muscles. Learn the difference between bone and cartilage plus the four types of movable joints. Together the two systems control our movements; clear illustrations and images demonstrate this process. Learn also about the importance of exercise and muscle health.
The brain is the most important part of our body and its structure makes humans unique among all of the Earth's animals. The ability to think is only one of the many things that we rely on our brains for in our everyday lives. Learn how the senses are linked to our nerves and how the environment stimulates our senses. Also learn about the spinal cord as part of the central nervous system as well as the parts of the brain.
