Corals rely on a simple nerve net to coordinate their feeding and symbiotic relationship with algae, ensuring survival without a brain. Sponges are among the simplest animals, lacking both brains and ...
The foot is a complex structure made up of 28 bones, 33 joints, 19 muscles, over 100 tendons and ligaments, and more than 200,000 different nerve endings. These work together to allow you to walk, run ...