Pulmonary Physiology Quiz

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What is the primary component of the atmosphere by volume?

Nitrogen (correct)

Oxygen

Argon

Carbon Dioxide

What is the total atmospheric pressure at sea level?

760 mm Hg (correct)

500 mm Hg

593 mm Hg

1000 mm Hg

According to Dalton's Law, how is the total pressure of gases calculated?

It is the sum of the partial pressures of each individual gas. (correct)

It is the average of all partial pressures.

It is the sum of only the major gases present in the atmosphere.

It is the product of the temperature and the number of gas types.

What is the estimated partial pressure of oxygen (O2) in human blood?

100 mm Hg Signup and view all the answers

What percentage of blood volume is typically associated with the pulmonary system?

10% Signup and view all the answers

In the pulmonary circuit, what characterizes the pressure dynamics?

High-flow, low-pressure system Signup and view all the answers

Which gas is typically transported in the highest concentration in arterial blood?

Oxygen Signup and view all the answers

What is the pressure of systemic circulation stated in the content?

25/8 mm Hg Signup and view all the answers

Which of the following effects does saliva have in the digestive tract?

Contains lysozymes that kill bacteria Signup and view all the answers

What is the primary action of cilia in the respiratory tract?

Waving away foreign particles Signup and view all the answers

Which step occurs first in the tissue repair cascade following blood vessel damage?

Vasoconstriction Signup and view all the answers

What protects the respiratory system from pathogens?

Ciliated epithelial cells Signup and view all the answers

In terms of gas exchange, which factor does NOT affect the rate of diffusion according to Fick's Law?

Fluid viscosity Signup and view all the answers

What role does prostacyclin play in platelet function?

Inhibits platelet binding Signup and view all the answers

The urinary tract's defense against infection includes:

Both B and C Signup and view all the answers

Which element is crucial for converting fibrinogen into fibrin in the clotting process?

Thrombin Signup and view all the answers

What is the primary function of the nonpathogenic normal flora in the digestive tract?

Competing against harmful microbes Signup and view all the answers

What event follows the adherence of platelets to collagen?

Release of platelet factors Signup and view all the answers

Which of the following best describes the role of mucus in the respiratory system?

Trapping microbes and particles Signup and view all the answers

Fibrinolysis in wound healing is primarily responsible for:

Breaking down the blood clot Signup and view all the answers

In relation to tissue repair, what does platelet aggregation achieve?

Blocks excessive blood loss Signup and view all the answers

Which condition allows for higher membrane permeability during gas exchange?

Increased lipid solubility Signup and view all the answers