The patellar reflex

When the patellar ligament is lightly tapped, the extensor muscle stretches slightly.

Related extras

Studying the blind spot

Demonstrating a method to determine where exactly the blind spot is in our visual field.

Modelling protein digestion in the stomach

Let’s simulate protein digestion in the stomach using a mixture of hydrochloric acid and pepsin.

Substances in tobacco smoke

Don’t smoke! This video demonstrates what happens in the lungs when a person smokes.

Sound localization

Sound localization is an important element in orientation. A sound reaches the ear closest to it...

Studying adsorption

Purifying a solution colored with fuchsine dye with finely ground activated carbon granules and...

Making a tissue sample

Examination of the cells and stomas on the epidermis of a pelargonium at 100x magnification.

Preparing a tissue sample from an onion

Examination of long, rectangular onion epidermal cells under the microscope at 100x magnification.

The change in respiratory rate during exercise

Through mild physical exercise, even a trained body doubles the number of breaths it takes...

Added to your cart.