Touch
What kind of receptors are found in the skin?
Touch, pressure, pain, and temperature receptors
(Mechanoreceptors, thermoreceptors, chemoreceptors)
What is the number of taste cells in a taste bud?
50-100
What cells in the nose detect smells?
Olfactory receptor cells
What part of the ear vibrates when sound waves hit it?
Eardrum
What part of the eye controls how much light enters?
The pupil
(controlled by the iris)
What’s the name of the condition where a person feels sensations in a missing limb?
Phantom limb syndrome
What are the bumps on the tongue called?
Papillae
Where do smell signals go after being detected in the nose?
To the olfactory bulb and then the brain
What tiny bones transmit vibrations in the middle ear?
Hammer, anvil, and stirrup
What part of the eye focuses light onto the retina?
The lens
What did the Harlow monkey experiment teach us about touch?
Touch is vital for emotional comfort and development, not just physical needs
What do taste buds detect?
Chemical molecules in food
Why does your sense of taste weaken when you have a cold?
Because smell and taste work together; blocked nose reduces flavor
What sends messages from the ear to the brain?
The auditory nerve
What are the two types of cells in the retina, and what do they detect?
Rods (light/dark) and cones (color)
What are the 3 main layers of the skin?
Epidermis, Dermis, Subcutaneous layer
Name the 5 basic tastes.
Sweet, sour, salty, bitter, umami
True or false: your nose can detect over a trillion smells.
True
What part of the inner ear is shaped like a snail and filled with fluid?
Cochlea
Explain the blindspot or the afterimage effect.
The blindspot is the spot on the retina where the optic nerve leaves the eye. There are no photoreceptors there, so you can’t see anything at that exact point.
An afterimage is a visual illusion that happens when photoreceptors in your eyes get overstimulated and temporarily "reverse" the image when you look away.
Name 3 important functions of the skin.
To protect the body from disease;
To keep our bodies cool by sweating;
To flush out toxins and regulate water loss;
To grow hair to keep our bodies warm;
To give us the sense of feeling and alert us when something is painful.
What are the receptor cells in taste buds called?
Gustatory cells
Why do things smell?
Things smell because they release tiny particles of themselves into the air, which eventually go into your nose.
What kind of cells in the cochlea help us detect sound and can be damaged by loud noise?
Hair cells
Why do we see an image upside down at first, and how do we perceive it upright?
The lens flips the image upside down; the brain reprocesses it to appear right side up