Exam (elaborations)
PHGY 210 Respiration Exam Questions And Accurate Answers
- Course
- Institution
PHGY 210 Respiration Exam Questions And Accurate Answers...
[Show more]
Content preview
PHGY 210 Respiration Exam Questions AndAccurate Answers
Question 1 Function of respiration - Answer Gas exchange
Conducting zone - Answer Conducting airways-airways from mouth and nose openings,
all the way down to the terminal bronchioles. Anatomical dead space of about 150mL
Respiratory zone - Answer Terminal bronchioles to alveolar sacs. Makes up most of the
lungs
Acinus - Answer Smallest physiological unit of the lung
Question 1 Function of conducting airways - Answer 1. Defense against bacterial
infection and foreign particles
2. Warm and humidify inspired air
3. Production of voice and speech through the movement of air over the vocal cords
4. Regulation of airflow
Pulmonary Circulation - ANS Transporting mixed venous blood to lungs where blood
gets oxygenated and then back to left heart
Bronchial circulation - Answer Supplying oxygenated blood from systemic circulation to
tracheobronchial tree. Allows for airways to get oxygenated from the bronchial arteries
of the aorta
3 types of alveolar cells - Answer 1. Epithelial type I and II cells
2. Endothelial cells-wall of pulmonary capillaries
, 3. Alveolar marcophages
Diaphragm - Answer Innervated by phrenic nerves from cervical segments 3, 4, and 5
Inspiration- Answer During inspiration, the diaphragm and intercostal muscles expand
thoracic cage. Intrapleural pressure becomes more negative, transpulmonary pressure
is increased, lung expands, alveolar pressure becomes sub-atmospheric, and hence, air
inflow into the alveoli.
Expiration - Answer Diaphragm and external intercostal muscles cease to contract ->
chest wall recoils -> intrapleural pressure increase -> transpulmonray pressure falls ->
lungs recoil -> air in lungs is compressed -> alveolar pressure > atmospheric pressure->
air flows out of lungs
Spirometry - Answer Measurement of volume of air inhaled during inspiration under a
number of different conditions. Not able to measure FRC, TLC or RV
Measurement of FRC - C1 X V1 = C2 X (V1 + FRC)
FRC = (C1 X V1 /C2) - V1
Minute ventilation - Answer VE = Vt x f
VT = tidal volume
f = number of breaths/min
Normal respiration values - VT = 500mL, f = 12 b/min
VE = 6000 mL/min
Va = 4200 mL /min
Physiological dead space - Answer Certain amount of inspired air although reaching the
respiratory zone, doesn't take part in gas exchange.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Stetson. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81633 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now