FREE ANATOMY AND STUDY GAMES ABOUT

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FREE ANATOMY AND STUDY GAMES ABOUT

RESPIRATORY SYSTEM EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -136 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: process of pulmonary ventillation

Answer:

automomic nuclei in brainstem stimulate skeletal muscles involved in breathing & muscles cyclically contract & relax (causes thoracic volume cyclic changes - result in a changing pressure gradient b/w lungs & atmosphere), air moves down pressure gradient

Question 2: upper respiratory tract

Answer:

larynx and above

Question 3: residual volume

Answer:

amount of air left in the lungs after the most forceful expiration

Question 4: alveolar gas exchange (CO2)

Answer:

CO2 diffuses from pulmonary capillaries into the alveoli

Question 5: skeletal muscles of breathing are classified into three categories

Answer:

muscle of quiet breathing, muscles of forced inspiration, and muscles of forced expiration

Question 6: intrapleural pressure

Answer:

pressure in the pleural cavity

Question 7: functional organization

Answer:

the conducting zone transports air and the respiratory zone participates in gas exchange

Question 8: functional residual capacity (FRC)

Answer:

expiratory reserve volume + residual volume, defined as the volume left in the lungs after a quiet expiration

Question 9: alveolar gas exchange (O2)

Answer:

oxygen diffuses from alveoli into pulmonary capillaries

Question 10: inspiratory capacity (IC)

Answer:

tidal volume + inspiratory reserve volume

Question 11: nose

Answer:

main conducting passageway for inhaled air

Question 12: how skeletal and muscular system produces respiration

Answer:

facilitates movement of air in and out of lungs

Question 13: alveolar gas exchange (external respiration)

Answer:

exchange of respiratory gases between the alveoli and the blood (capillary beds surrounding it)

Question 14: cardiac notch

Answer:

a groovelike impression on the left lung that provides space for the aorta of the heart

Question 15: intrapulmonary pressure

Answer:

fluctuates with breathing, may be higher, lower, or equal to atmospheric pressure, is equal to atmospheric pressure at end of inspiration and expiration

Question 16: total lung capacity (TLC)

Answer:

sum of all volumes, including residual volume, and defined as the maximum volume of air that the lungs can hold

Question 17: muscles of forced expiration

Answer:

internal intercostals, abdominal muscles, transverse thoracis, and serratus posterior inferior

Question 18: vital capacity

Answer:

tidal volume + inspiratory and expiratory reserve volumes, defined as the total amount of air a person can exchange through forced breathing

Question 19: atmospheric pressure

Answer:

pressure gases in the air exert on the environment, changes with altitude, and increased altitude = "thinner air" = lower pressure (at sea level, value is 760 mm Hg = 14.7 lbs per square inch = 1 atm.)

Question 20: purpose of the nasal cavity

Answer:

warm, cleanse, and humidify the air that is breathed in

Question 21: four volumes measured by spirometry

Answer:

tidal volume, inspiratory reserve volume (IRV), expiratory reserve volume (ERV), residual volume

Question 22: tidal volume

Answer:

amount of air inhaled or exhaled during quiet breathing

Question 23: Hilum

Answer:

indented region on lung's mediastinal side

Question 24: pulmonary ventillation known as breathing

Answer:

movement of air between atmosphere and alveoli consists of two cyclic phases

Question 25: chest wall

Answer:

anatomically configured to expand outward with the lungs clinging to the chest wall during expansion (due to surface tension of the serous fluid)

Question 26: parietal pleura

Answer:

lines the internal thoracic walls, lateral surface of mediastinum, and superior surface of the diaphragm

Question 27: muscles of forced expiration are involved in...

Answer:

contracting during a hard expiration (i.e. coughing), either pulling the rib cage inferiorly, medially, and posteriorly or compressing the abdominal contents

Question 28: the four continuous simultaneous processes of respiration

Answer:

pulmonary ventillation, alveolar gas exchange, gas transport, and systemic gas exchange