Which letter is labelling the ala of the nose?
C
D
E
B
A
The Correct Answer is A
- C: ala of the nose- The alae are the rounded, lateral flared portions of the external nose that form the lateral walls of the nostrils. Composed mainly of fibrofatty tissue and cartilage, they are flexible to allow expansion during inspiration and play a role in directing airflow into the nasal passages for optimal filtration and humidification.
- D: Rhinal apex - The rhinal apex, or tip of the nose, is the most anterior and mobile part of the external nose. It is primarily cartilaginous, allowing slight movement, and contributes to the overall nasal contour and the first point of air entry, influencing airflow direction.
- E: nostril- The nostrils are the external openings of the nasal cavity, bordered by the alae and the nasal septum. While closely related to the ala, the nostril refers specifically to the opening itself, not the flared wing.
- B: Dorsum nasi- The dorsum nasi is the longitudinal ridge that extends from the root to the tip of the nose. It consists of both bony (upper two-thirds) and cartilaginous (lower one-third) structures, providing the nose with its shape and contributing to the regulation of airflow by maintaining airway patency.
- A: Root- The root of the nose is the superior, bony attachment of the nose located between the eyes at the nasofrontal suture. It connects the nasal bones to the forehead and provides structural support to the nasal bridge, serving as the anchor for the upper portion of the nose
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"B"}
Explanation
A. Esophagus: The esophagus is part of the digestive system and serves as a conduit for food and liquids from the pharynx to the stomach. It is not involved in air conduction and does not contribute to the respiratory conducting zone.
B. Nasal cavity: The conducting zone begins at the nasal cavity, where air is filtered, warmed, and humidified. From the nasal cavity, air passes through the pharynx, larynx, trachea, bronchi, and terminal bronchioles, which together form the pathway that delivers air to the respiratory zone for gas exchange.
C. Larynx: The larynx is part of the conducting zone but is not the starting point. It functions primarily to protect the lower airway during swallowing and to produce sound, while allowing air passage from the pharynx to the trachea.
D. Alveoli: Alveoli are the primary structures of the respiratory zone where gas exchange occurs. They are not part of the conducting zone and are located distal to the terminal bronchioles.
Correct Answer is {"dropdown-group-1":"A"}
Explanation
A. Accessory muscles: Accessory muscles of respiration, including the sternocleidomastoid, scalene, and pectoralis minor, are recruited when increased ventilatory effort is needed, such as during exercise, respiratory distress, or lung diseases like COPD. They assist in elevating the thoracic cage, increasing lung expansion, and enhancing air movement into the lungs beyond what the primary muscles can achieve.
B. Vocal cords: Vocal cords are structures within the larynx that produce sound and regulate airflow through the glottis. They do not participate in the mechanics of breathing or provide supplemental respiratory power.
C. Bronchioles: Bronchioles are small airways that conduct air to the alveoli and regulate airflow through smooth muscle constriction or dilation. They are not muscles and do not contribute mechanical force to ventilation.
D. Primary muscles: The primary muscles of respiration, mainly the diaphragm and intercostal muscles, perform the bulk of normal, restful breathing. While essential for ventilation, they are supplemented by accessory muscles only when additional respiratory effort is required.
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