VII. Respiratory System
Task # 8
1. Take enough photos to show the respiratory system and associated structures. Include 3 of the following labels on your photo:

Lung lobes:
This is a photo of lung lobes on the pig. Each arrow is pointing to a separate lobe of the lungs.

This is a photo of the larynx. We cut it open to view the vocal cords and that is the cause for the slits, but the whole thing is the larynx.


The photo above shows the epiglottis, we pulled it out of the mouth, so it appears that the epiglottis is in the throat. It is the u shaped flap of the skin.

2. Open up the larynx, take a photo of the exposed vocal cords. Label at least 2 exposed vocal cords.

vocal cords:
The photo above shows the vocal cords. They are the two wavy lines that you see. They run down the middle of the Larynx.

3. Create a 3 column chart with the following headings: Structure, Description(what it looks like), Function. Include the following structures in your chart:

Description (what it looks like)
The epiglottis is a U shaped flap of skin surrounding the glottis. It has a rubbery feel to it.
Its function is to prevent food from entering the trachea during swallowing. It is also one of multiple structures that make up the larynx or voice box.
is a smooth, rather large oval shaped organ in the middle of the throat
Inside are the vocal cords, sound is generated at the larynx. It controls the pitch and volume of the sound.
Vocal Cord
They are white tubes inside the larnyx
Voice is produced by vibrations of the vocal cords. when someone holds their breath the vocal cords are closed.
bony tube made up of cartilage and ligaments
This is the airway for oxygen to pass during respiration. Air enters the body through the trachea and thats how the body gets its air.
Lobes of Lungs
The left lung has three lobes, the right lung has four lobes. They are small and solid
They all aid in the act of respiration. Taking in air, and releasing carbon dioxide
Bronchial Tubes
large tube, that splits into smaller tubes called bronchioles. So it almost looks like a tree, one large tubes, that spreads into smaller parts
The bronchial tubes carry the air that has already passed through the trachea, into smaller branches and cells of the lungs. But there is no exchange in these tubes
The alveoli look like a bunch of small balls all clumped together, like grapes on a vine.
Click here to see a picture of alveoli
This is the final part of the respiration, it is where the gas exchange happens. Its many tiny parts allow the oxygen to quickly disperse as CO2 comes in from a reverse course at the same time.

4. How many lobes make up each lung? Name the lobes.
The left lung has two to three lobes and the right lung has four. The four right lungs are called the cardiac, apical, diaphragmatic, and the smallest one the intermediate. The two left lobes are the diaphragmatic and the anterior lobes.
5. How many vocal cords did you see inside the larynx?
We saw three vocal cords inside the Larynx of our pig.

6. What is laryngigtis? What are the symptoms of this condition? What causes this condition?
7. What is bronchitis? What are the symptoms of this condition? What causes this condition?
8. Trace the flow of air through the respiratory system of the class mammalia.
9. What is the relationship between the respiratory system and the Eustachian tubes?
10. Compare and contrast the respiratory systems of the clam, crayfish, starfish, and fetal pig.