Sight
Sight can be used to observe things, differentiating:
What are colour, distance, size, and shape?
The receptors for smell are centered mostly in your what?
What is a nose?
This thin membrane vibrates when sound hits it, passing waves to the middle ear bones.
What is the eardrum (or tympanic membrane)?
You use this sense to tell if something is soft, rough, hot, or cold.
What is touch?
This liquid in your mouth helps wash food to your taste buds.
What is saliva?
This is the colored part of your eye that controls how much light enters.
What is the Iris?
Smell is closely linked to this other sense, which is why food tastes bland when you have a cold.
What is taste?
The unit used to measure how loud a sound is (e.g., whispers are 30, concerts are 120).
What are decibels (dB)?
This is the largest organ in your body and contains all your touch receptors.
What is the skin?
Scientists recognize these five basic tastes that humans can detect.
What are sweet, salty, sour, bitter, and umami?
These special cells in the retina help you see colors, especially in bright light.
What are cones?
This part of the brain processes smells and connects them to memories and emotions.
What is the olfactory bulb?
This spiral-shaped part of the inner ear turns sound vibrations into nerve signals.
What is the cochlea?
These special nerve endings in your skin detect pressure, pain, heat, and cold.
What are sensory receptors (or touch receptors)?
This unusual taste, discovered in 1908, comes from foods like mushrooms and soy sauce.
What is umami?
This part of the eye sends visual signals to the brain, acting like a messenger cable.
What is the optic nerve?
These tiny hair-like structures on olfactory cells help catch scent molecules in the air.
What are cilia?
Loud sounds can damage these tiny hair cells in your inner ear, leading to hearing loss.
What are stereocilia (or hair cells)?
This layer of skin contains most of the touch receptors and gives skin its flexibility.
What is the dermis?
This sense works with taste to help you enjoy food flavors.
What is smell?
This part of the eye changes shape to focus light onto the retina, helping you see near and far objects clearly.
What is the lens?
If you lose your sense of smell due to illness or injury, you have this medical condition.
What is anosmia?
These three tiny bones in your middle ear help amplify sound vibrations.
What are the hammer (malleus), anvil (incus), and stirrup (stapes)?
This rare condition makes people unable to feel pain, which can actually be dangerous.
What is congenital insensitivity to pain (CIP)?
These tiny bumps on your tongue contain your taste buds and help you detect flavors.
What are papillae?