Ear Health states that a retracted eardrum is one that has been sucked in by an imbalance in air pressure on each side of the eardrum. A common symptom of a retracted eardrum is dulled hearing, which occurs because of the eardrum's inability to vibrate. If left untreated, a retracted eardrum can lead to fluid build-up in the ear as well as middle ear infectionsKnow More
Based on information from ENTSpecialists, the air pressure in the ear is normally balanced by the Eustachian tubes, which connect the middle ear behind the eardrum to the back of the nose. Although normally closed, the Eustachian tubes can open during chewing, yawning or swallowing. These brief openings allow air pressure in the middle ear to equalize and also provide a drain for any fluid build-up.
According to ENTSpecialists, blockage of the Eustachian tubes can lead to negative pressure in the middle ear. Over time, this negative pressure can cause a retracted eardrum. Children under 4 years old still have developing Eustachian tubes and can be prone to ear infections and/or fluid build-up.
According to Ear Health, other symptoms of Eustachian tube disorder can include feeling of fullness in the ear, dizziness, ringing or buzzing, and pain.Learn more about Nerves
The cerebellum is the center of motor control within the brain, according to Healthline. It receives sensory information from the various sensory organs and the spinal cord and coordinates the body's movements. The cerebellum is responsible for speech, balance, coordination and posture, and it's the developmental center for learning motor coordination within the human body.Full Answer >
A sciatic nerve diagram is a diagram displaying the sciatic nerve in relation to other parts of the body. The sciatic nerve begins in the lower back and runs down the length of the entire leg. It is both the longest and widest nerve in the body.Full Answer >
Scientists have discovered that certain parts of the brain form a vast neural network that is activated when a human is using their imagination. Studies using fMRI technology show activity in the precuneus, posterior parietal, frontoparietal, occipital and dorsolateral profrontal regions of the brain in study participants using their imagination.Full Answer >
The central nervous system, composed of the brain, spinal cord and an extensive neuron network, serves as the control center for all bodily functions. It functions as the transmitter and receiver as well as the pathway for information flow and determines how the body responds to changes in its internal and external environment.Full Answer >