Download Respiratory System Review Slides

Respiratory System Review Slides
A Remarkable System!
Identify the Following Structures
Identify the Following Structures
Ultra-low
magnification view
of a coronal section
through the larynx
including from top
to bottom, the
epiglottis (E), false
vocal folds (FVF),
vocal folds (VF),
thyroid cartilage
(TC), cricoid
cartilage (CC),
lateral saccule (LS)
and trachea (T).
Identify the Structures
Identify the Structures
Ultra-low magnification view of the epiglottis
with its core of elastic cartilage (EC). The
upper surface of this structure is covered with
a layer of stratified squamous epithelium,
while most of the under surface is typical
respiratory (pseudostratified, columnar with
cilia and goblet cells).
Identify the Following Structures
Identify the Following Structures
Ultra-low magnification view of
the human trachea. A large,
horse-shoe shaped core of
hyaline cartilage (HC) extends
around the trachea, except for
the posterior region.
Identify the Following Structures
Identify the Following Structures
Ultra-low magnification
view of the human trachea.
A large, horse-shoe shaped
core of hyaline cartilage
(HC) extends around the
trachea, except for the
posterior region.
High magnification view of tracheal respiratory epithelium. This is a pseudostratified, ciliated
columnar epithelium with goblet cells (GC). The lamina propria is characterized by containing
think bundles of elastin (EL).
Identify the following Structures
The bronchus. Here we see the typical epithelium lining the larger conducting portions of the
respiratory tract. The lumen of the bronchus where air would be flowing as we breathe.
A. The nuclei of the pseudostratified columnar epithelium lining the bronchus. This is actually a simple
type of epithelium since all of its cells sit on the basement membrane. However their nuclei as you can
see from the photomicrograph can be at different levels giving the impression that there are several layers
and that it is stratified. Similar epithelium is found in only a few places outside of the respiratory tract
(eg. in parts of the male reproductive tract such as the epididymus).
B. Goblet cells. Here we are pointing to the mucin in their cytoplasm. Mucus forms an essential part of
the ‘mucocilary escalator’ mechanism that helps to keep pathogens out of the airways.
C. Cilia. The pseudostratified columnar epithelium has motile (moving) projections that act to move
mucous with debris and pathogens out of the respiratory tract. The other major component of the
‘mucociliary escalator’!
Pseudostratified columnar ciliated epithelium with Goblet cells is typical ‘respiratory- type’ epithelium
of the upper airways.
D. Collagen. Note the pale pink staining.
E. A fibroblast. Once again we are pointing to the elongated nucleus as the scant cytoplasm merges with
the surrounding tissues.
F. Smooth muscle. Note the elongated nuclei and dark pink cytoplasm.
Identify the Following Structures
This is an enlargement of the
mucosa
Identify the Following Structures
Identify the following Structures
Identify the following Structures
Identify the Following Structures
Identify the Following Structures
Identify the following Structures
Fill out the following Structures
Identify the Following Structures
Identify the Following Structures
Identify the Following Structures
Identify the Following Structures
Identify the normal and diseased lung.
What is the disorder of the diseased lung?
Identify the normal and diseased lung.
What is the disorder of the diseased lung?
Identify the following structures (tubes)
Ultra-low magnification view of an area of dog lung. Seen here are
portions of the air conducting elements of the lower respiratory
system, including a large bronchus (Bru) and smaller bronchiole
(Bro) and terminal bronchiole (TB), the latter leading directly to a
lung acinus.
Identify the following Structures
Identify the following Structures
Medium magnification
view of an area of the
wall of a large
intrapulmonary
bronchus. Seen here are
the pseudostratified
respiratory epithelium
(RE), underlying lamina
propria (LP), smooth
muscle (SM) and hyaline
cartilage plaques (HC).
Large numbers of
alveolae (Alv) are seen
at the lower left.
Identify the Structures
Identify the Structures
Medium magnification view of a terminal bronchiole (TB) with a profile of
respiratory bronchiole (RB) emerging. The TB is characterized by its simple cuboidal
epithelium with no goblet cells, and smooth muscle (SM) in the wall.
Identify the Structures
Identify the Structures
Low magnification view of the proximal end of a lung acinus. Shown here is the
terminal bronchiole (TB) with some smooth muscle in the wall. The TB gives rise to a
respiratory bronchiole (RB) with vestigial alveolae coming off along its length.
Identify the Structures
Identify the Structures
Low magnification view of a portion of a lung acinus extending from the respiratory
bronchiole (RB) through alveolar duct (AD) to alveolar sac (AS).
Identify the Structures
Identify the Structures
Low magnification view of a portion
of a lung acinus extending from the
respiratory bronchiole (RB) through
alveolar duct (AD) to alveolar sac
(AS).
High magnification view of alveolae that form the wall of the alveolar duct and alveolar sac.
The alveolus is lined by squamous epithelium (SqEp) or type I pneumocytes, as well as
cuboidal, type II pneumocytes that secrete surfactant. Capillaries (Cap) are found in close
proximity to the alveolar lining.