Save
BI1AP3 - Anatomy & physiology (S1)
L7A: Respiratory system (anatomy of the lungs)
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
INIAT
Visit profile
Cards (64)
What is internal respiration?
Use of
oxygen
by
cells
View source
What is external respiration?
Transfer of gas from
atmosphere
to cells
View source
What are the key functions of respiration?
Gas exchange
, host defence, and
metabolism
View source
What is the conducting zone responsible for?
Moving gases to and from
atmosphere
and lungs
View source
What is the respiratory zone's function?
Where
gases
are exchanged
View source
What are the components of the conduction airways?
Nasal cavity
Mouth
Pharynx
Larynx
Trachea
Bronchi
Bronchioles
View source
What is the role of conducting airways?
Facilitates
air movement
and conditions air
View source
How does air get conditioned in the conducting airways?
Warmed
,
filtered
, and
moistened
View source
What is the function of mucus and cilia in the conducting airways?
Remove
inhaled
particles
View source
What is the structural characteristic of conducting airways?
Rigid but flexible
View source
What type of epithelium lines the conducting system?
Pseudo-stratified columnar epithelium
View source
What do goblet cells secrete?
Mucus to trap
particles
View source
What is the function of cilia in the conducting airways?
Move
trapped
particles
View source
What do serous glands secrete?
Water
anti-bacterial
substance
View source
What is the role of the nasal cavity?
Humidification
,
warming
, and filtering of air
View source
What do the three conchae bones provide?
Large
surface area
View source
What is the function of the oropharynx?
Common
path
for food and air
View source
What connects the oropharynx to the trachea?
Larynx
View source
What is the role of the larynx?
Contains
vocal cords
and directs food/air
View source
What connects the larynx to the lungs?
Trachea
View source
What is the function of the trachea?
Facilitates air movement and
particle
clearance
View source
What structural feature does the trachea have?
C-shaped
cartilage rings
View source
How does the trachea maintain its structure?
Non-collapsing
but flexible
View source
What allows coughing in the trachea?
Smooth muscle
contracting
rings
View source
What do the primary bronchi branch into?
Secondary bronchi
View source
How many secondary bronchi does the right primary bronchus split into?
Three
smaller secondary bronchi
View source
How many secondary bronchi does the left primary bronchus split into?
Two
smaller secondary bronchi
View source
What do secondary bronchi divide into?
Tertiary bronchi
View source
What do tertiary bronchi become?
Bronchioles
View source
What do terminal bronchioles branch into?
Respiratory bronchioles
View source
Where does gas exchange occur in the lungs?
In lobules of the lungs
View source
What are lobules made of?
Bronchioles
and
alveolar
ducts
View source
Where does gas exchange take place?
In
respiratory bronchioles
and
alveolar ducts
View source
How many alveoli are in an adult?
300 million
alveoli
View source
What is the function of the respiratory membrane?
Minimum barrier to diffusion
View source
What allows efficient gas exchange in alveoli?
Rich
blood supply
View source
What type of cells are Type 1 alveolar cells?
Thin squamous
epithelia
View source
What do Type 2 alveolar cells secrete?
Surfactant
to stop alveoli collapsing
View source
What is the role of macrophages in alveoli?
Remove small particles and
phagocytose
bacteria
View source
What is the function of alveolar surfactant?
Lowers
surface tension
and stabilizes structure
View source
See all 64 cards