ANATOMY 201 Lecture Notes - Lecture 7: Thyroid Cartilage, Vocal Folds, Tonsil
22 May 2018
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Tonsils:
Exist in the Pharynx, which is area in the back of the mouth.
Three major tonsil structures:
1. Pharyngeal tonsils
2. Palatine Tonsils- The ones we think of as tonsils, that get swollen
3. Lingual Tonsils- Lingual meaning tongue. Down at the base of the tongue, which can be
swollen as well if you get sick.
• Pharynx is where you have both food and air going through the same tube.
The Larynx
• Larynx is your voice box. Larynx begins at the epiglottis, which is a cartiledge structure
in your throat and the main purpose is to close off your airways when you are
swallowing food.
The main structure of the Larynx is the large round cartilage tube.
-If you feel the front of your throat, everyone has an adams apple. If you feel that bump, it is
going to be what is known as your thyroid cartilage. It is the anterior wall of your larynx.
• What is inside the larynx is a series of muscles and ligaments that make up your vocal
cords. The vocal cords themselves sit on the superior portion of thyroid cartilage and
run in the direction from anterior to posterior across the structure of the larynx. The
pink are the muscles, which help us move our vocal cords.
• The glottis is the opening between your vocal cords. When you breathe, all the air you
breathe is passed through this structure. When you are doing quiet breathing, the
glottis is going to be open. There are times when the glottis can be closed, or almost
closed, to restrict or change how much air is passed through the holes.
• Larynx can change shape
Glottis open- air goes in and out of lungs
Glottis closed- less air flow, but the vocal cords vibrate together
The Trachea
-Imagine a flexy straw.
-Trachea is a tube that you want to keep open, but you want to make sure it is still open
-We see a ribbon in the trachea, like a straw!
-Made of cartilage rings (tracheal cartilage) and Anular ligament
-Compared to the esophagus- it a streth ut it does’t eed to e ope all the tie. With
the trachea, it stays open so you can breathe easily and not have to worry about opening and
closing the structure all the time.
-There is cartilage that surrounds the anterior surface of your trachea.
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Document Summary
Exist in the pharynx, which is area in the back of the mouth. Three major tonsil structures: pharyngeal tonsils, palatine tonsils- the ones we think of as tonsils, that get swollen, lingual tonsils- lingual meaning tongue. Down at the base of the tongue, which can be swollen as well if you get sick: pharynx is where you have both food and air going through the same tube. The larynx: larynx is your voice box. Larynx begins at the epiglottis, which is a cartiledge structure in your throat and the main purpose is to close off your airways when you are swallowing food. The main structure of the larynx is the large round cartilage tube. If you feel the front of your throat, everyone has an adams apple. If you feel that bump, it is going to be what is known as your thyroid cartilage.
