Minor Alar Cartilage

We just learned about the Major Alar Cartilage.

Another part of the nose is the Minor Alar Cartilage.

This is a part of the nostril that touches back to the face, and helps shape the nostril.


(from: wikipedia - minor alar cartilage)


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Major Alar Cartilage

We just learned about the Lateral Nasal Cartilage.

Another part of the nose is the Major Alar Cartilage, also called the greater alar cartilage or lower lateral cartilage.

This is another thin piece of cartilage that helps form the shape of the nose.
The major alar cartilage makes the upper outside part of the nostril, and also bends around at the tip of the nose and makes part of the inside part of the nostril right at the middle.


(from: wikipedia - major alar cartilage)


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Lateral Nasal Cartilage

We just learned about the Septal Nasal Cartilage.

Another part of the nose is the Lateral Nasal Cartilage.

This is a flat triangle shaped cartilage on either side of the nose, that helps give the nose shape and protect the inside of the nose.


(from: wikipedia - lateral nasal cartilage)


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Septal Nasal Cartilage

We just learned about the Perpendicular Plate of Ethmoid Bone.
A while back we learned about the Vomer bone that is part of the skull right behind where the nose is.

Another part of the septum of the nose is the Septal Nasal Cartilage.

This is the part that sticks out from the perpendicular plate, and is made of rubbery cartilage that you can push around.
It is covered up by skin and other parts of your nose, and makes up the middle that separates your nostrils.


(from: wikipedia - septal nasal cartilage)


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Perpendicular Plate of the ethmoid bone

We just learned about the Nasal Septum.

Another part of the nose is the Perpendicular plate of the ethmoid bone.

The ethmoid bone is the flat bone between the main part of the skull and where the nose is.
The perpendicular plate is attached to the ethmoid bone, and sticks out forward and splits the nostrils into two sides.


(from: wikipedia - perpendicular plate of ethmoid bone)


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Nasal Septum

We just learned about the Nostril.

Another part of the nose is the Nasal Septum.

This is what splits the nose into a left and right nostril.
It is made up of different parts, with some of it cartilage and some of it bone.

Sometimes if there is a nose injury a person can have what is called a deviated septum.
In that case the septum in the middle gets removed and they would only really have one big nostril.


(from: wikipedia - nasal septum)


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Nostril

We just learned about the Wing of the Nose.

Another part of the nose is the Nostril also called the naris.

The nostrils are the holes in the front of the nose, right above the mouth.
We use our nostrils for breathing in, breathing out, for blowing our nose when it gets stuffed up, and for smelling food.

The nostrils on the outside of the face are called the external nostrils, or anterior nares.
There are actually other nostrils further inside your nose that help bring the air and smells into your body.

Some people can actually flare out their nostrils, and make the holes get bigger and smaller!
Inside the nostril are around 1,000 hairs, and maybe if you have a stuffed up nose there might be nasal mucus (sometimes called snot) or dried nasal mucus (sometimes called boogers).


(from: wikipedia - )


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Wing of the Nose

We just learned about the Nasal Ridge.

Another part of the nose is the Wing of the Nose also called the Ala of the Nose.

This is the lower part of the nose that spreads out wide where the nostrils are, almost like a wing shape.
The word "ala" is Latin and means "wing".


(from: wikipedia - human nose)


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Nasal Ridge

We just learned about the Nasal Root.

Another part of the nose is the Nasal Ridge.

This is the long part of the nose that starts with the nasal root at the top and goes down to the tip of the nose.


(from: wikipedia - human nose)


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Nasal Root

We just started learning about the Nose.

The top of the nose in between the eyebrows is called the Nasal Root.

That is where the nose starts, and the dip down from the forehead before the top of the nose is called the nasion.
The nasal root and nasion is the spot where a pair of glasses would sit on the nose.

Right above the nasion is called the glabella, which is the spot right between the eyebrows.


(from: wikipedia - glabella)


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Nose

We just learned about the Eustachain Tube,
and we've learned a lot about the Human Ear!.

Let's learn about how the Nose works!

Our nose sticks out from our face to help us smell, one of the five important senses.
People and animals use the sense of smell to tell when there is danger like fire, or if a food smells good or has gone rotten and shouldn't be eaten.
Animals use their nose to help them find food to eat.

Noses are used to breath, to smell, and even to help get rid of some waste like when you blow your nose.

Only humans and most mammals have noses that stick out from their face in a different spot than their mouth.
For animals like birds, snakes or fish their nose doesn't stick out.
Some animals like fish don't breath through their noses, and snake noses are actually inside their mouth.


(from: wikipedia - nose)


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Eustachian Tube

We just learned about the Tensor Tympani.

Another part of the ears is the Eustachian Tube.

This is a part of the ear that goes toward the nose.
The middle ear is kind of like a balloon that is filled with air.
When you go on an airplane, the air pressure makes the balloon swell up bigger, and makes it hard to hear.
The eustachian tube is a way for your body to let out a little bit of air so the balloon of your middle ear goes back to normal.
Usually chewing gum or swallowing helps your ears open the eustachain tube, and because it sometimes makes a popping sound, some people call it making your ears pop.

The middle ear can also get some bad liquids in it that need to be drained out, so the eustachian tube helps drain those, and they would come out the nose.


(from: wikipedia - eustachian tube)


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Tensor Tympani

We just learned about the Stapedius Muscle.

Another muscle in the ear is the Tensor Tympani.

This muscle is in the middle ear and is connected to the malleus or hammer bone.
When you are chewing your food that would be really loud in your ears since the ear is right by the mouth.
But the tensor tympani muscle tightens up when you are chewing and that helps to block the sounds that your mouth makes so it is not so loud when you eat.


(from: wikipedia - tensor tympani muscle)


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Stapedius Muscle

We just learned about the Oval Window.

Another part of the ear is the Stapedius Muscle.

Remember we learned about the ear bone called the stirrup or stapes.
Just like you might think from the name, the stapedius muscle is what controls the stapes bone, and keeps it from wiggling too much when sound comes in and vibrates the bone.

This is the smallest bone in the body, and is just about 1 millimeter.


(from: wikipedia - stapedius muscle)


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Oval Window

We just learned about the Stapes bone of the ear.

Another part of the ear is the Oval Window, also called the venestra vestibuli or fenestra ovalis.

The vibrations come in to the ear and shake the hammer, anvil and stirrup.
The stirrup is connected to the oval window, which is oval shaped and leads to the cochlea and the inner ear.


(from: wikipedia - oval window)


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Stapes

We just learned about the Malleus and Incus, also called the hammer and anvil.
.

Another bone in the ear is the Stapes also called the stirrup.
This is the smallest bone in the human body, at about 3 millimeters.
It gets the name stirrup because it looks like a stirrup from a saddle used to ride a horse.

Just like the malleus and incus, when these bones move they also move the stapes and it sends the vibrations on toward the inner ear.


(from: wikipedia - stapes)


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Incus

We just learned about the Malleus.

Another part of the ear is the Incus.

Incus is a Latin word that means anvil.
This is the bone in the ear next to the malleus or hammer.
The hammer takes vibrations from the eardrum and passes them on to the anvil which also vibrates and shakes.


(from: wikipedia - incus)


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Malleus

We just learned about the Ear Ossicles.

One of the three bones that make up the Ossicles is the Malleus, also called the hammer.

The malleus is touching the eardrum, and when the eardrum vibrates from sound coming in, it shakes the malleus bone.
When the malleus bone shakes, it is touching the other ossicles and sends the vibrations toward the inner ear.


(from: wikipedia - malleus)


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Ear Ossicles

We just learned about the Middle Ear.

Part of the middle ear is called the Ossicles.

These are three bones in the ear that help take the sound coming from the outer ear and vibrate to help send the right sounds to the inner ear.


(from: wikipedia - ossicles)


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Middle Ear

We just learned about the Perilymph.

Another part of the ear is the Middle Ear.

We've learned about the outer ear that you can see on the outside of the body, and the inner ear that turns the sound into messages for the brain to understand.

The Middle Ear is in between the outer and inner ear, and helps take the sound brought in by the outer ear and turn it into sound waves for the inner ear to send to the brain.

(from: wikipedia - middle ear)


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