Respiratory Anatomy Lab –Answers
There are 5 stations to complete. Use this worksheet to record and, if necessary (!), correct
answers. Work together! You will have approximately 15 minutes per station.
Station 1: Anatomy
Using the diagrams in text and Wiley Plus, trace the airflow through the respiratory system starting
with the external nares. Number the structures in order from 1 through 15.
__13_ alveolar duct
__5__ oropharynx
__12_ bronchiole
__10_ secondary bronchus
__7__ larynx
__4__ nasopharynx
__15_ alveolus
__1__ external nares
__3__ internal nares
__11_ tertiary bronchus
__14_ alveolar sac
__9__ primary bronchus
__2__ nasal cavity
__8__ trachea
__6__ laryngopharynx
Station 2: Structure & Function
Using the cards located at your station, match the structure with the correct function and then
complete the following:
_respiratory bronchiole
tubular airways that begin the respiratory zone
__larynx___
connects the laryngopharynx with the trachea
__trachea___________
tube-like structure that conducts air from the larynx to the
bronchi
___epiglottis_________
closes over the glottis during swallowing
____cartiledge_______
keep the trachea from collapsing
____teritary bronchus_
division of the bronchi that enter bronchopulmonary
segments
___terminal bronchiole
last division of the conducting zone
_____oropharynx_____
conducts air from the nasopharynx to the laryngopharynx
_____aveolus________
small round sacs where gas exchange occurs
_____terminal bronchiole small conduction airway that serves a lobule
Station 3: Histology
Match the type of epithelium with it’s location in the respiratory system & describe it’s
function
Epithelium
Function
a) pseudostratified ciliated columnar
-warm humidify and trap debris
b) simple columnar
c) simple cuboidal
d) simple squamous
e) stratified squamous
Location
_a___ nasal cavity through nasopharynx
___e_ oropharynx through larynx above vocal cords
_a___ larynx below vocal cords through primary bronchi
_b___ secondary bronchi through tertiary bronchi
__c__ bronchioles through beginning of respiratory bronchiole
_d___ end of respiratory bronchiole though alveolus
Station 4: Function of Respiratory Muscles
1. Define quiet and forced inspiration and expiration.
Quiet respiration is with active inspiration, using the primary muscle the diaphragm, and the
external intercostals. Quiet normal expiration is passive and uses no muscle use. Forced inspiration
is when you use accessory muscles like the scalenes or sternocleidomastoids and forced expiration
using the abdominal muscles and internal intercostals