The sense of balance
The head's position and movement is detected by the inner ear.
The spinal cord is the part of the central nervous system running inside the spinal...
Neurons are cells specialised for transmitting electric signals.
This lesson helps you understand the process of hearing.
Skeletal muscles form the active part of the locomotor system: they move the bones they...
Learn more about the early stages of human development with this lesson.
This animation demonstrates the fine molecular structure and mechanism of muscles.
Concave and convex lenses are used for the correction of shortsightedness and farsightedness.
Is the resolution of our eye comparable to that of today’s top quality films? What is the actual...