Human Sense Organs

In: Science

Submitted By tiffinkie
Words 730
Pages 3
Tiffany Herring
B. LaFond
PSYC 1000
Human Sense Organs As human beings we have 5 different human sense organs. These sense organs are sight, smell, touch, taste, and hearing. Our 5 sense organs help each of us and how we perceive reality and the world around us. Without our sense organs we would have a much harder time understanding the world we live in. Each of our different senses have specialized organs that are set up to receive specific stimuli, these are linked to the nervous system and from the nervous system then linked to the brain.
The first sense organ is sight. The eye is the organ of sight. The basic structure of the eye consists of a transparent lens that focuses light on the retina. The retina is covered with two types of light-sensitive cells called cones and rods. The cones are sensitive to light whereas the rods are not they have a greater sensitivity to light. The eye is connected to the brain by the optic nerve. Our brain takes the two different images from our eyes and turns them into a single 3-D image. One of the most amazing things I learned about the eye was that our eye actually sees things upside down but when our brain processes the images it sees it turns them right side up and that is the image our brain shows us.
Smell is our second sense organ. The nose is the organ we use to smell. The nose is lined with mucous membranes that have smell receptors that are connected to the olfactory nerve. Smells are made up of a variety of substances and vapors. When the smell receptors interact with vapors the sensation is sent to the brain through the olfactory nerve. Our smell receptors are sensitive to only seven different smells which can be classified as camphor, musk, flower, mint, ether, acrid or putrid. A person can temporarily or permanently lose their sense of smell due to sickness or injury. Our sense of smell plays a…...

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