Week 14 notes Flashcards
What gas regulates our breathing?
Carbon dioxide
What are the 2 zones of the respiratory system and what anatomical parts do they consist of?
1) conduction zone: nasal cavity (nose), pharynx, larynx, trachea, bronchi, terminal bronchioles
2) respiration zone: respiratory bronchiole, alveoli
What is the job of each zone?
- Conduction zone - conducts air, adds water, warms air, cleans up debris
- Respiration zone - respiration
What is the job of cilia in the respiratory system?
It moves debris up and out of your body
What is the job of goblet cells?
It traps the debris
What is the role of the larynx?
It is your voice box
What stops food from entering our airways as we swallow?
A flap called the epiglottis
What is the job of the thyroid cartilage?
It protects your larynx / voice box
What is the glottis, and what is it made up of?
It is the part of the larynx that contains the vocal cords.
What are vestibular folds? What is their function?
They are known as “false vocal cords.” They lubricate the vocal folds with mucous and prevent food from entering the lower respiratory tract organs.
What keeps the trachea open?
Cartilage surrounding it
What are the three cells inside the alveoli?
- Type one cells: thin walls allow for rapid gas change
- Type two cells: produce surfactant, which reduces surface tension -> prevents collapse of alveoli
- Macrophage: immunity
How many lobes does the lung have? How many are on the right and how many on the left?
4 lobes. 3 on the right, 1 on the left.
Lungs are passive - what does this mean?
They are not involved in creating their movement
In which direction do gases move?
From high to low pressure
