REspiratory B7 Flashcards
What encompasses the Nose, Sinus, larynx, trachea, bronchi, bronchioles, terminal, bronchioles
Conducting zone
Where does gas exchange occur at?
Respiratory unit=
Bronchioles, alveolar ducts, alveoli
WHat receptors constrict the bronchioles?
M3 receptors
What receptors dilate the bronchioles?
B2 receptors
Alveoli are the site of what?
gas exchange
ALveoli are lined with ________ which is made by ________ epithelial cells. (IMPORTANT)
surfactant
TYPE 2- makes surfactant
WHat kind of cells primarily make up the alveoli?
Type 1 epithelial cells
If you are going to expand something you have to change something else. Give an example…
If make alveolus bigger I have to make lung interstitium smaller therefore you have to make capillaries smaller.
If alveoli get bigger capillaries have to get _________.
smaller
If alveoli get smaller, capillaries have to get __________.
bigger
We are able to keep our lungs open because of what?
Pleura
What are the two types of pleura and where are they?
Visceral- against lung
Parietal pleura- against chest wall
Small space between visceral and parietal pleura that is filled with fluid that helps reduce friction.
Intrapleural space
negative pressure with respect to atmospheric pressure, if not the lungs will collapse
True/False: You need Expiratory muscles for normal breathing.
False, not necessary for normal breathing
do need it if you are working out/ breathing hard
WHat is the amount of air moved during normal, quiet breathing.
Tidal Volume (TV)
