The Ear

The video explains how the human ear works, detailing the journey of sound from the pinna to the brain. It covers the anatomy of the ear, including the eardrum, cochlea, and auditory nerve, and how these parts work together to convert sound waves into electrical impulses. The video also discusses the human hearing range and factors that affect it, such as age and noise exposure. It compares human hearing to that of animals like dogs and elephants, highlighting how different species perceive sound frequencies. The video concludes by explaining how these differences can be used to deter pests.

What is the function of the pinna in the human ear?

• To transform sound into electrical impulses

• To vibrate in response to sound

• To funnel sound into the ear

• To produce sound waves

Which part of the ear is responsible for converting vibrations into electrical signals?

• The eardrum

• The auditory nerve

• The pinna

• The cochlea

What is the typical hearing range for humans?

• 100 hertz to 100,000 hertz

• 10 hertz to 10,000 hertz

• 20 hertz to 20,000 hertz

• 50 hertz to 50,000 hertz

How does the hearing range of dogs compare to that of humans?

• Dogs cannot hear any frequencies that humans can

• Dogs have the same hearing range as humans

• Dogs can hear higher frequencies than humans

• Dogs can hear lower frequencies than humans

What is the term for frequencies below the human hearing range?

• Subsound

• Ultrasound

• Supersound

• Infrasound