29 Questions
What is the primary function of the respiratory passage?
Filtration, conduction, moistening, and heating of air
What is the cardiac output (CO) at rest?
4900-5000 ml/min
Which of the following gases is transported from the alveoli to the blood?
Oxygen
What is the function of the mucociliary cells in the respiratory passage?
To trap foreign particles and expel them from the respiratory passage
Why is the right primary bronchus wider and more vertical compared to the left?
To facilitate the removal of foreign bodies
What is the purpose of the macrophages in the alveoli?
To scavenge bacteria and viruses
What carries deoxygenated blood from the right ventricle?
Pulmonary arteries
If the volume of a gas increases, what happens to its pressure according to Boyle's law?
The pressure decreases
Which of the following membranes surrounds the lungs?
Both visceral and parietal pleura
What is the normal intrapleural pressure at rest?
-4 mmHg or -5 mmHg
What happens if one or both pleural membranes are punctured?
Pneumothorax occurs
Which blood vessels carry oxygenated blood from the alveoli?
Pulmonary veins
What does the acronym FRC stand for?
Functional Residual Capacity
What is the approximate value of the Functional Residual Capacity (FRC)?
2300 ml
What does the Vital Capacity (VC) consist of?
Inspiratory Reserve Volume, Tidal Volume, and Expiratory Reserve Volume
What is the approximate value of the Total Lung Capacity (TLC)?
5800 ml
What does the ratio FEV1/FVC represent?
Forced Expiratory Volume in one second divided by Forced Vital Capacity
Where does the blood flow after passing through the right atrium?
Right ventricle
What type of blood do the Vena Cavae sup and inf carry?
Venous blood (high CO₂)
Which valve separates the left atrium from the left ventricle?
Mitral valve (bicuspid valve)
What vessels constitute systemic circulation?
Systemic arteries
Which part of the heart pumps blood to the lungs?
Right ventricle
What is the term used to describe the rate at which blood is pumped from either ventricle?
Cardiac output (CO)
What is the average Tidal Volume in an adult male?
500 mL
How much extra volume of air can be inspired over and above the tidal volume with full force?
1100 mL
What is the residual volume?
1200 mL
What does Inspiratory Capacity (IC) equal to?
Tidal Volume + Inspiratory Reserve Volume
How does smoking cessation at age 30 affect lifespan according to the text?
Lived as long as non-smokers
What was surprising about men who stopped smoking before age 40?
They lived one year less than non-smokers
Test your knowledge of the circuitry of the cardiovascular system including the anatomy and function of the heart's atriums, ventricles, veins, and arteries. Explore how blood flows through the body and lungs via different vessels.
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