TCDHA Histology Midterm Exam | Most Recent Exam
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List the layers found in the wall of hollow organs, from
deep to superficial. - Answers-- mucosa
- submucosa
- muscularis
- adventitia OR serosa
Describe the structure of *mucosa* (innermost layer of
hollow organs). - Answers-- epithelium layer
- CT layer (lamina propria)
- (smooth) muscle layer (muscularis mucosae)
^smooth m. layer not always present
Describe the structure of *submucosa* - Answers-- located
under mucosa
- generally dense irregular CT
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- often contains glands
Describe the structure of *muscularis externa* - Answers--
muscle layers, variable number
- usually smooth m., but sometimes skeletal m.
- not always present
What is the difference between an *adventitia* and a
*serosa*? - Answers-*Adventitia* => layer of CT that
surrounds hollow organ and anchors it to surrounding
tissue (e.g., trachea, esophagus)
*Serosa* => layer of simple squamous epithelium
(mesothelium) that surrounds the hollow organ, allowing it
to slide within the body cavity (e.g., lungs, stomach)
What are the two main divisions of the respiratory system?
- Answers-(1) conducting portion
(2) respiratory portion
What are the two main divisions of the respiratory system?
What is the function of each? - Answers-(1) *conducting
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portion* -> conditions the incoming air & moves it into/ out
of the lungs
(2) *respiratory portion* -> site of gas exchange
List the components of the upper portion of the respiratory
system - Answers-- nasal cavity
- pharynx
- larynx
List the components of the lower portion of the respiratory
system - Answers-- trachea
- bronchi
- lungs
T/F: "There is cartilage in the trachea." - Answers-True
T/F: "There is cartilage in the bronchi." - Answers-True
T/F: "There is cartilage in the bronchioles." - Answers-
False. Bronchioles do not contain cartilage
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What are the four tissue layers generally found in the
upper part of the conducting portion of the respiratory tract
(from nasal cavity -> bronchi)? - Answers-- epithelium
- lamina propria/submucosa (normall blended in resp.
system)
- a bone/cartilage/muscle layer (analogous to muscularis
externa)
- CT adventitia
Which of the following does NOT include cartilage?
a) larynx
b) bronchi
c) trachea
d) nasal cavity
e) none of the above - Answers-a) larynx
b) bronchi
c) trachea
d) nasal cavity
*e) none of the above*