Science Form 3 - Sensory Organs

What is the function of the cornea in the eye?

• To produce tears

• To detect colors in the eye

• To regulate blood flow in the eye

• To focus light into the eye

Which part of the ear is responsible for maintaining balance?

• Auditory nerve

• Eustachian tube

• Cochlea

• Vestibular system

What is the role of the olfactory nerve in the sense of smell?

• The olfactory nerve transmits signals from the nose to the brain for the sense of smell.

• The olfactory nerve controls taste perception

• The olfactory nerve regulates body temperature

• The olfactory nerve is responsible for hearing

How does the skin help in the sense of touch?

• The skin helps in the sense of touch by releasing chemicals that interact with the environment

• The skin helps in the sense of touch by emitting light signals to the brain

• The skin helps in the sense of touch by containing mechanoreceptors that detect pressure, temperature, and vibration, sending signals to the brain for perception.

• The skin helps in the sense of touch by producing sound waves for perception

What is the function of the taste buds on the tongue?

• To store food

• To hear sounds

• To regulate body temperature

• To detect different flavors

Explain the process of how the eye focuses on objects at different distances.

• The eye focuses by moving the eyeball closer or farther from the object

• The eye focuses by emitting light towards the object

• The eye focuses by changing the color of the iris

• The eye focuses on objects at different distances by adjusting the shape of the lens through accommodation.

What is the purpose of the cochlea in the ear?

• To regulate body temperature

• To produce earwax

• To store excess sound waves

• To convert sound vibrations into electrical signals

Describe the structure and function of the optic nerve.

• The optic nerve is a muscle that controls eye movement.

• The optic nerve is responsible for taste perception.

• The optic nerve is composed of bone tissue.

• The optic nerve is a bundle of nerve fibers that connects the eye to the brain, transmitting visual information.

How do the sensory organs work together to help us perceive the environment?

• Sensory organs emit signals instead of receiving them.

• Sensory organs do not communicate with the brain.

• Sensory organs process stimuli directly without converting them into electrical signals.

• Sensory organs receive external stimuli and convert them into electrical signals that are sent to the brain for processing.

What are the different types of receptors found in the sensory organs?

• Olfactory receptors

• Gustatory receptors

• Auditory receptors

• Mechanoreceptors, Thermoreceptors, Nociceptors, Photoreceptors, Chemoreceptors