1. alveoli epithelial cells
ANS Type I alveolar cells (alveolar structure) Type II alveolar cells (surfactant production)
2. 1.Which of the following is TRUE regarding the pulmonary system?
A. Each lobe is divided into bronchi.
B. The left lobe is divided into three lobes.
C. The mediastinum c...
NSG-530 Quiz 2
1.alveoli epithelial cells
ANS Type I alveolar cells (alveolar structure) Type II alveolar cells (surfactant production)
2.1.Which of the following is TRUE regarding the pulmonary system?
A.Each lobe is divided into bronchi.
B.The left lobe is divided into three lobes.
C.The mediastinum contains the lungs and heart.
D.The larynx connects the upper and lower airways.
ANS Correct Answer D
The larynx connects the upper and lower airways. The mediastinum is located between the lungs and contains the heart, great vessels, andesophagus. The right lung has three lobes, and the left lung has two. Each lobe is divided into segments and lobules
3.Neurochemical control Respiratory center
ANS •Dorsal and ventral respiratory groups
•Pneumotaxic and apneustic centers .Neurochemical control Lung receptors
ANS •Irritant receptors
•Stretch receptors
5.Neurochemical control Chemoreceptors
ANS Central chemoreceptors Peripheral chemoreceptors
6.Muscles of Breathing Major muscles of inspiration
ANS Diaphragm External intercostals
7.Muscles of Breathing Accessory muscles of inspiration
ANS ØSternocleidomas- toid muscle
ØScalene muscles
8.Mechanics of Breathing Gas Transport
ANS Four steps ØVentilation of the lungs
ØDiffusion of oxygen from the alveoli into the capillary blood ØPerfusion of systemic capillaries with oxygenated blood ØDiffusion of oxygen from systemic capillaries into the cells Diffusion of CO2 occurs in reverse order
9.1.A patient has bulbous enlargement of the distal segments of the fingers. Which disease is associated with this condition? A.Cystic fibrosis
B.Acute pneumonia C.Sickle cell disease
D.Acute myocardial infarction
ANS A
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