The human body is a marvel of engineering. It houses many different systems that keep it running. The body is constantly working on processing signals that tell it what needs to be done. It could be sending a signal that it needs to process the hamburger into fuel so it fires up the digestive system. It could hear a sound and process the sound waves to make it recognizable. The human body can take an image and determine how big it is and how far away it is before its eyes even blink.
Taking a look at something that most people have and how it works will reveal just how marvelous the human body is and what it does. For example, let’s look at the ear. This part of the human body is where sound gets collected and processed. It sends the information that it collects to the brain.
The ear has three sections: the middle ear, inner ear and outer ear. All three sections work together to help the body collect and process the sound. The outer ear is what people see when they look at someone. This section of the ear is what collects all the sound waves. The ear canal is also found in the outer ear and is protected by earwax. Chemicals that make up the earwax fight off infections that could hurt the skin.
Sound reaches the middle ear section after being collected by the outer ear and progressing through the ear canal. Sound waves will be changed into vibrations before they reach the inner ear. In order to change the waves into vibrations, the ear needs an eardrum. It gets its name because it looks like a drum. The eardrum also serves as the separator between the outer and middle ear sections, but it also keeps the two separate from the ossicles. The ossicles are the smallest three bones in the human body: the malleaus, the incus, and the stapes. As the sound waves make their way to the eardrum in the middle ear, it changes the waves to vibrations. These vibrations will move the three ossicle bones which will move the sound along to the inner ear.
The inner ear will send the vibrations into the cochlea which is a very small curled tube. The cochlea has little cells which are covered with hairs. As the sound vibrations reach the inner ear and pass through the liquid filled cochlea, the hairs inside the tube begin to vibrate. As the hair in the cochlea vibrates it sends nerve signals to the brain. The brain understands these vibrations and processes the information and, voila, there is sound.
The human body performs these types of tasks every second of every day. The example of the ear is just a small part of one system in the human body. The body is a treasure trove of adventure and excitement. Learning about the different systems and how they operate will give greater insight into the complexity of life. This resource will provide useful links that will provide in-depth information on some of the systems of the body.