Do you know about the three smallest bones in our body? Let's learn about the ossicles of the ear!

Did you know that the three smallest bones in your entire body are inside your ear? Yes, it's really amazing. They're so small, no bigger than a few grains of rice. But these little bones do a lot of work. In fact, these three little bones help us hear the sounds of the world around us, enjoy music, and recognize the voices of loved ones. So today, let's talk about these amazing, tiny bones (ossicles).

What are these ossicles?

Simply put, there are three tiny bones in your middle ear that we call ossicles . These are:

1. Malleus - This is also called the 'hammer'.

2. Incus - This is also called 'antler'.

3. Stapes - This is called that because it has a shape like a 'line'.

These three work together like a chain. That's why this system is also called the Ossicular Chain . Their main job is to take sound vibrations that come from your eardrum, amplify them, and send them to the cochlea in your inner ear, which is the main place where sound is detected. There, these vibrations are converted into electrical signals that the brain can understand.

How exactly does this skeletal chain work?

This is like a relay race. Just as one athlete passes the baton to the other, these three bones pass the sound vibrations to each other. Let's see how this process works.

1. Step 1: Sound waves enter your ear and hit the eardrum (tympanic membrane). The eardrum then begins to vibrate, much like the skin of a drum vibrates when you hit it.

2. Step 2: The malleus , or 'hammer' bone, which is directly connected to the eardrum, receives the vibration. When the eardrum vibrates, the malleus also vibrates in the same way.

3. Step Three: The malleus transfers the shock it receives to its next friend, the incus, or 'anvil' bone.

4. Step Four: The incus takes that shock and transmits it to the stapes, or 'line', bone, which is the last link in the chain.

5. Final step: The stapes bone, which absorbs the shock it receives, presses against the oval window, which is a place like the entrance to the cochlea in the ear.

When this vibration enters the cochlea, the fluid and sensory hair cells there are stimulated and create electrical signals. These signals are what we recognize as "sound" in the brain. During this process, the sound wave is amplified as it passes through these three bones. This is why we can hear even very subtle sounds clearly.

Let's learn a little more about these three little bones.

Let's take these three bones and look at them separately.

Malleus (Malleus - hammer)

This is the first and largest of the ossicles. It gets its name because it is shaped like a hammer. One end of it is attached to the eardrum. Therefore, when the eardrum moves, the entire malleus bone moves. The other end of it is attached to the incus bone.

Incus (Incus - Anvil)

This is the middle link of the chain. It is shaped like an anvil used by a blacksmith. The vibrations from the malleus hit this. It's like hitting the anvil with a hammer. One side of the incus is connected to the malleus, and the other side is connected to the stapes.

Stapes (Stapes - line)

This is the smallest hero in the story. The stapes is the smallest bone in the entire human body. It is only a few millimeters long and wide. It is shaped like the line of a horse's legs when it is ridden. This is the most important job of taking vibrations from the incus and passing them directly to the inner ear.

What are the common diseases that affect these bones?

If there is any disruption in the functioning of these tiny bones, sound vibrations do not reach the inner ear properly. The hearing loss that results from this is called conductive hearing loss . Let's look at some of the problems that affect these bones below.

How to recognize a problem with the bones? (Symptoms)

If your ear bones are affected, you may experience one or more of these symptoms.

• Hearing loss or sudden loss of hearing: Sounds seem distant, or the ear feels like it is blocked.
• Ringing in ears: A continuous ringing sound inside the ear.
• Earache: A feeling of ache inside the ear.
• Pus-like fluid draining from the ear: This can be seen especially in cases of infection.
• Ear fullness or pressure: A feeling as if the ear is filled with air.
• Balance problems: Sometimes these problems can also affect the vestibular system, which is the system that controls balance in the ear, causing dizziness.

What kind of tests will the doctor do?

When you see a doctor, he or she will ask about your symptoms and examine your ear. If necessary, they may refer you for some of these tests.

What are the treatments for these conditions?

Treatment depends on the specific problem you have. Your doctor will examine you and prescribe the treatment that is best for you. These are the most common treatments used:

• Antibiotics: If the problem is caused by a bacterial infection, these are given to cure it.
• Hearing aids: These devices help you hear sounds better if your hearing is permanently impaired.
• Surgery: Sometimes surgery may be necessary to repair bone damage, remove abnormal growths, or implant artificial bones.

How do you keep these precious bones healthy?

The best thing you can do to protect these little bones is to take steps to prevent ear infections and to seek medical advice as soon as possible if you notice any changes in your hearing.

• If water gets in your ear, wipe it well and keep it dry.
• When you get things like a cold, they can cause ear infections, so get proper treatment.
• Wear protective helmets if you play sports that are dangerous to your head.
• If you experience any hearing loss, pain, or ringing in your ears, see a doctor immediately .

Many conditions that affect these bones can be successfully treated if detected early. However, if treatment is delayed, it can cause long-term damage. So, don't ignore even a minor problem.

Ossicles, ear bones, middle ear, Malleus, Incus, Stapes, hearing, hearing loss, Otosclerosis, Cholesteatoma, conductive hearing loss, ear bones sinhala