2nd quarter

What part of the eye control the amount of light allowed to enter the eye?

• Cornea
• Pupil
• Retina
• Iris

Answer explanation

The part that controls the light that pass trough the eye.

There is a snail-shaped tube in our ear that is filled with liquid. This tube also contains the nerves that send messages to the brain. What is this?

• Cochlea
• Semicircular canals
• Auditory canal
• Eustachian tube

Which part of the tongue tells us if the food we eat is sweet, sour, salty or bitter?

• nerves

• papillae

• taste buds

What layer of the skin contains dead skin cells?

• sweat glands

• Dermis
• Epidermis

What is the function of the optic nerve?

• The optic nerve controls eye movement and focus.
• The function of the optic nerve is to carry visual signals from the eye to the brain.
• The optic nerve transmits sound signals to the ears.
• The optic nerve regulates the amount of light entering the eye.

What does the lens of the eyes do to the light that enters to our eyes?

• The lens absorbs light before it reaches the retina.
• The lens reflects light away from the retina.
• The lens focuses light onto the retina.

The hammer, anvil and the stirrup are the three tiny bones found in our ears. How do they send sound to the inner ear?

• The hammer, anvil, and stirrup create sound waves in the inner ear.
• The hammer, anvil, and stirrup block sound from entering the inner ear.
• The hammer, anvil, and stirrup transmit sound vibrations from the eardrum to the inner ear.

Cilia are found in the nostrils. Why are they there?

• Cilia are there to enhance the sense of smell.
• Cilia help in the production of mucus in the nostrils.
• Cilia are there to trap and move particles out of the nostrils.

What is the function of the sweat glands in our skin?

• To provide a barrier against pathogens.
• The function of sweat glands is to regulate body temperature and excrete waste.
• To absorb sunlight for vitamin D synthesis.

The pinnae are shaped like shells and are attached to the sides of the head. Why are they important?

• The pinnae are used for temperature regulation.
• The pinnae help in maintaining balance.
• The pinnae are important for sound collection and localization.