The is the space between the parietal and visceral pleuraе.
Pleural cavity
Bronchial space
Alveolar cavity
Thoracic cavity
The Correct Answer is A
A. Pleural cavity: The pleural cavity is the potential space between the parietal pleura (lining the thoracic wall) and the visceral pleura (covering the lungs). It contains a small amount of lubricating fluid that reduces friction during lung expansion and contraction, allowing smooth respiratory movements while maintaining negative pressure to facilitate lung inflation.
B. Bronchial space: The bronchial space refers to the lumen of the bronchi through which air passes. It is not a cavity between pleural layers and does not play a role in pleural fluid dynamics or lung expansion.
C. Alveolar cavity: Alveolar cavities are microscopic air spaces within the lungs where gas exchange occurs. They are internal to the lung tissue and do not exist between the pleural layers.
D. Thoracic cavity: The thoracic cavity is the large compartment of the chest housing the lungs, heart, and major vessels. While it contains the pleural cavities, it is not specifically the space between the parietal and visceral pleurae.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Decreased airway resistance: Parasympathetic stimulation actually increases airway resistance by causing constriction of smooth muscles in the bronchioles. Decreased resistance occurs under sympathetic activation, which relaxes bronchial smooth muscles.
B. Enlargement of the airway diameter: Airway dilation is a result of sympathetic stimulation, particularly via beta-2 adrenergic receptors. Parasympathetic activity produces the opposite effect, narrowing the bronchioles rather than enlarging them.
C. Increased airflow: Increased airflow is associated with bronchodilation under sympathetic control. Parasympathetic activation reduces airflow due to bronchoconstriction, which can limit the volume of air entering the alveoli.
D. Narrowing of the bronchioles: Parasympathetic stimulation releases acetylcholine, which binds to muscarinic receptors on bronchial smooth muscle, causing constriction. This bronchoconstriction increases airway resistance and is a key feature of parasympathetic influence on the respiratory system.
Correct Answer is A
Explanation
A. Forced Expiratory Volume (FEV1): FEV1 is the maximal volume of air a person can forcibly exhale in the first second of a forced expiration following full inhalation. It is a critical measure in pulmonary function testing, used to assess airway obstruction, as seen in conditions like asthma or chronic obstructive pulmonary disease (COPD).
B. Forced Vital Capacity (FVC): FVC represents the total volume of air exhaled forcefully after a maximal inhalation, regardless of time. While FEV1 is measured within the first second of this maneuver, FVC measures the complete exhaled volume and not the rate or initial flow.
C. Residual Volume (RV): RV is the volume of air remaining in the lungs after maximal exhalation. It cannot be voluntarily expelled and serves to prevent alveolar collapse. RV is unrelated to forced exhalation measurements like FEV1.
D. Expiratory Reserve Volume (ERV): ERV is the additional volume of air that can be exhaled after a normal tidal exhalation. It does not reflect the maximal forced expiratory flow over one second and is only a portion of the total exhaled capacity.
E. Tidal Volume (TV): TV is the volume of air inhaled or exhaled during normal, quiet breathing. It is a small, routine respiratory volume and does not represent maximal or forced expiratory capacity.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.