Articulaciones y músculos – Clip

The video explains involuntary muscles, focusing on the iris. It describes how the iris, an involuntary muscle, controls the size of the pupil by contracting and relaxing. This adjustment helps regulate the amount of light entering the eye, enhancing vision clarity.

What are involuntary muscles and how do they function in the human body?

Describe the role of the iris in regulating light entering the eye.

What happens to the iris when it contracts and relaxes?

How does the iris help improve vision in varying light conditions?

Explain the importance of the iris in the context of eye health.