31:02
Brain and nervous system: your information superhighway
This program explores the brain and nervous system, using the analogy of computers and the Internet. Topics discussed include electrical impulses and how nerve messages travel; parts of the brain and their functions; how the brain and spinal cord ar...
35:41
Muscular system at work: the inner athlete
This program looks at the many roles played by muscle and skin in our everyday lives. Topics include muscles and movement; cardiac, smooth, and skeletal muscle; detailed structure of a skeletal muscle; types of muscle contraction and movement; muscl...