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Respiratory System First Class Kitsap County Homeschool Co op Apologia Anatomy and Physiology


The long muscle below your lungs. It helps you breathe in and out.

Vocal Cords

These strings or strips of tissue vibrate as air blows across them. They are tightly pulled across your larynx and give you the ability to make sounds.


The part of the pharynx that is closest to your mouth.


Tiny motorized "whips" waving back and forth on the cells lining the back of your nose and throughout much of the respiratory tract.


Air passes through these structures in your nasal cavity where the air is cleaned, moistened and brought to the correct temperature.


The two tubes that branch out from the trachea to the lungs.


the last part of the pharynx, closest to the larynx


Balloon-like sacs in the lungs that allow the oxygen you need to pass easily from the air you inhale into the blood stream.

Nasal cavity

A space in your head where much of the dust, pollen, bacteria and other stuff in the air your breathe is filtered out.


the uppermost part of the pharynx. It is connected to the inner ear.


a small pink projection hanging downward from your soft palate.

Sinus cavities

holes in your skull that aid in the warming, moisturizing and filtering of the air you breathe.

Mucous membranes

Mucus producing tissues, found in many parts of your body.


Air passes through the three parts of this structure on its way down to the trachea.

Respiratory system

The system that enables you to breathe; your nose, trachea, and lungs are a few parts of this system.


The condition that occurs when your bronchi are swollen, usually because of an infection.


Very small, thin-walled tubes that carry air to where the lungs can finally use it.


The part of your body that gives you the ability to speak

Voice box

another name for the larynx

Alveolar ducts

Bronchioles fan out to create these little spaces where air enters the alveoli.

What does the hair in your nose do?

It filters large particles out of the air you breathe.

What does the mucus in your nasal passage do?

It captures particles out of the air you breathe.

What are cilia?

They are like motorized whips that push mucous out of your nasal cavity, trachea, bronchi and lungs.

Explain how the conchae help warm and moisten the air you breathe.

They disrupt the airflow, making the air bounce around and hit the warm, moist tissue in your nasal cavity.

What are the thin strips of tissue in your larynx called?

They are your vocal chords.

What determines your voice's pitch?

The tension in the vocal chords as well as how thick and heavy they are.

What determines your voice's volume?

How much air passes across your vocal chords determines the volume.

How do the cartilage rings around your trachea help you?

They keep your trachea from collapsing.

What are your bronchi?

They are the tubes that carry air from your trachea to your lungs.

Explain the importance of alveoli.

They are the places in the lungs where oxygen is put into the blood and carbon dioxide is removed..

Name some of the dangers of smoking.

It increases your chance of long cancer, raises your blood pressure, damages your lungs, and is addictive.

How does the oxygen get from your
lungs into your blood?

At the alveoli, the oxygen travels across the single cell thick blood vessel walls into blood cells.

What muscle is mostly responsible for your breathing?

The diaphragm is mostly responsible for breathing.

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