The patellar reflex
When the patellar ligament is lightly tapped, the extensor muscle stretches slightly.
Demonstrating a method to determine where exactly the blind spot is in our visual field.
Let’s simulate protein digestion in the stomach using a mixture of hydrochloric acid and pepsin.
Don’t smoke! This video demonstrates what happens in the lungs when a person smokes.
Sound localization is an important element in orientation. A sound reaches the ear closest to it...
Purifying a solution colored with fuchsine dye with finely ground activated carbon granules and...
Examination of the cells and stomas on the epidermis of a pelargonium at 100x magnification.
Examination of long, rectangular onion epidermal cells under the microscope at 100x magnification.
Through mild physical exercise, even a trained body doubles the number of breaths it takes...