What of the following factors cause a reduction in the pulmonary vascular resistance following the first breath?

I. Increased alveolar pressure of oxygen
II. Removal of lung fluid which reduces pressure on pulmonary vessels
III. Increase in lung volumewhich widens the caliber of extralveolar vessels

a. I, II, and III c. I only
b. II and III only d. I and II only


a. I, II, and III

Health Professions

You might also like to view...

Define and contrast two connective tissues properties: elasticity and plasticity

a. Elasticity is the ability of tissues to return to their original shape after being deformed. Plasticity is deformation of tissues beyond their elastic limit, which results in irreversible changes. b. Elasticity is the inability of tissues to return to their original shape after being deformed. Plasticity is deformation of tissues beyond their elastic limit, which results in irreversible changes. c. Elasticity is the ability of tissues to return to their original shape after being deformed. Plasticity is deformation of tissues beyond their elastic limit, which results in reversible changes. d. Elasticity is the ability of tissues to return to their original shape after being deformed. Plasticity is regeneration of tissues beyond their plastic limit, which results in irreversible changes.

Health Professions

What is the BEST way to gain a parents' confidence?

a. show your competence and compassion while managing their child b. tell them that everything is going to be OK and rush the child to the squad c. use adult-sized equipment on their child and explain that it will work better d. speak in a way that is firm and direct in order to minimize their panic

Health Professions

Which of the following is NOT an example of a Root Type Definition for Section G, Mental Health?

a. 12-step meetings b. Family psychotherapy c. Group therapy d. Individual psychotherapy

Health Professions

You should classify injured or ill people into one of how many categories if using the START triage system?

A) Four B) Five C) Six D) Three

Health Professions