How we Smell

What are the smells we detect made of?

• A. Invisible electrical signals from the brain.

• B. Tiny particles or chemical pieces floating in the air.

• C. Only the air itself.

• D. Water droplets from the nose.

Which two places do the smell particles travel through first to get from the air outside to deep inside the nose?

• Throat and Lungs.

• Nostrils and Nasal Cavity.

What is the main job of the small hairs (cilia) and the moist lining (mucous membrane) inside your nose?

• A. To tell the brain what the smell is.

• B. To find the source of the smell.

• C. To push the air out.

• D. To keep the nose moist and clean the air.

After the air is filtered, it reaches the olfactory membrane. What is the membrane's job?

• A. To warm up the air.

• B. To start recognizing the smell.

• C. To let special cells collect the smell information.

• C. To let special cells collect the smell information.

What is the final part of the body that recognizes the smell and decides what to do next

• A. The Olfactory Membrane

• B. The Lungs.

• C. The Brain

• D. The Nostrils.

The video used an example of how the brain reacts to a dangerous smell. What was the example?

• A. Smelling a flower and smiling.

• B. Smelling a burning smell and looking for a safe place

• C. Smelling food and your mouth watering.

• D. Smelling perfume and sneezing.

The video mentions that dogs can detect more smells than humans. What does this explain about dogs?

• A. They are better at running.

• B. They are better at digging.

• C. They are great at searching and rescuing lost people.

• D. They are great at flying.