Biology Chapter 33 Section 3 The Senses

Front

What is the first part of the eye that light enters?

Back

The cornea.

Front

Where are sense receptors located in the skin?

Back

In the dermis and epidermis.

Front

What happens if a person lacks motor neurons?

Back

They would be unable to swing a hammer.

Front

Which structure is part of the inner ear?

Back

Cochlea.

Front

Why is it difficult to taste when you have a cold?

Back

Blocked nasal cavity will prevent odor molecules from reaching the olfactory bulbs.

Front

What is the function of the cornea?

Back

To refract light and help focus it onto the retina.

Front

What are the three main parts of the ear?

Back

Outer ear, middle ear, inner ear.

Front

What role do olfactory receptors play in the sense of smell?

Back

They detect odor molecules and send signals to the brain.

Front

What is the function of the retina?

Back

To convert light into neural signals for the brain.

Front

What is the difference between the dermis and epidermis?

Back

The dermis is the inner layer of skin containing blood vessels and nerves, while the epidermis is the outer layer that provides a barrier.