100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
Previously searched by you
WCU PHYS 261 FINAL EXAM ACTUAL EXAM 2 LATEST VERSIONS A AND B EACH VERSION CONTAINS 100 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES|AGRADE$17.99
Add to cart
WCU PHYS 261 FINAL EXAM ACTUAL EXAM 2 LATEST
VERSIONS A AND B EACH VERSION CONTAINS 100
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES|AGRADE
What are the 2 types of respiration? - ANSWER: internal respiration and external
respiration
In which direction does air flow due to pressure differences? - ANSWER: from a high
area to a low area
What is internal respiration? - ANSWER: Gas exchange that occurs between the
aleveoli and RBCs, and between the RBCs and tissue
What is external respiration? - ANSWER: air movement between the lungs and the
atmosphere
What is inhalation? - ANSWER: when air moves from the atmosphere into the lungs
What is exhalation? - ANSWER: when air moves from the lungs into the atmosphere
What is Boyle's Law? - ANSWER: that pressure and volume are inversely proportional
What is the atmospheric pressure at sea level? - ANSWER: 760 mmHg
What is intrapulmonary pressure? - ANSWER: pressure inside the lungs
What is intrapulmonary volume? - ANSWER: volume inside the lungs
What is the atmospheric pressure and intrapulmonary pressure when you are at
rest?(neither inhaling or exhaling) - ANSWER: 760mmHg
What is the lung volume during rest? - ANSWER: 400ml air
For inspiration, is the intrapulmonary pressure higher or lower than the atmospheric
pressure? - ANSWER: lower
What are the steps of inspiration? - ANSWER: -blood O2 levels are low, while CO2 is
high
-chemoreceptors get stimulated
-chemoreceptors stimulate medulla(respiratory center)
-medulla stimulates the phrenic nerve
-phrenic nerve stimulates the diaphragm and respiratory muscles
-diaphragm and muscles move down and outward
-negative pressure created inside the lungs
, -thoracic veins drain blood into the lungs
-increase in intrapulmonary volume
-decrease in intrapulmonary pressure by 4mmHg= 756mmHg
-air enters lungs
What are the 2 types of chemoreceptors and their functions? - ANSWER: Central
receptors
-located near the medulla
-detect hydrogen concentration in CSF and by detecting hydrogen, it can tell if CO2
has increased
Peripheral receptors
-found in carotid artery and aortic bodies
-detects a decrease in O2 levels, and if decreased, it stimulates the medulla
What are the steps of expiration? - ANSWER: -inhalation caused the lungs to be filled
with air
-stimulates stretch receptors within the medulla
-medulla inhibits the phrenic nerve
-diaphragm and respiratory muscles no longer stimulated by phrenic nerve
-diaphragm and muscles relax
-diaphragm moves up and muscles move inward
-lungs recoil properly
-blood is pushed out of the lungs
-decrease in intrapulmonary volume
-increase in intrapulmonary pressure by 8mmHg= 764mmHg
-air leaves lungs
What are the parts of components capacity and their meaning? - ANSWER: a- tidal
volume(TV): a normal breath
b- inspiratory reserve volume(IRV): the amount of air your can forcefully inhale after
a normal inhale
c- expiratory reserve volume(ERV): the amount of air you can forcefully exhale after
a normal exhale
d- vital capacity(VC): the amount of air that can be manipulated
e- residual volume(RV): the amount of air always left in the lungs
f-total lung capacity(TLC): the total amount of air your lungs can hold
What is pH, its range, and the categories within its range? - ANSWER: -the
concentration of free hydrogen ions in a solution
-0-14
-acidic: 0-7, neutral: 7-8, basic: 8-14
What is acidosis, the 2 types of acid-base disturbances, and their meanings? -
ANSWER: -pH is acidic
-metabolic: imbalance between acid and base due to excess acid in the body or not
enough base in the body
-respiratory: imbalance between acid and base due to excess CO2 in the body
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 salopchemay. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
