Which of the following structures moves downward to close the trachea during the process of swallowing?
Epiglottis
Vestibular fold
Uvula
Cricoid cartilage
The Correct Answer is A
a. Epiglottis: The epiglottis is a small flap of cartilage located above the larynx (voice box). During swallowing, the epiglottis folds down to cover the opening of the trachea, preventing food or drink from entering the airway and causing choking.
b. Vestibular fold: Vestibular folds are also known as false vocal cords. They do not play a major role in preventing food or drink from entering the airway.
c. Uvula: The uvula is a small, fleshy projection hanging from the back of the soft palate. It does not directly cover the trachea during swallowing.
d. Cricoid cartilage: The cricoid cartilage is a ring-shaped cartilage located at the base of the larynx. It provides structural support and does not move significantly during swallowing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
a. Ovary: The ovary releases the ovum during ovulation, but fertilization does not occur here.
b. Uterus: The fertilized ovum implants and develops in the uterus, but fertilization occurs earlier.
c. Fallopian tube: Fertilization typically occurs in the ampulla of the fallopian tube, where the sperm meets the ovum.
d. Cervix: The cervix is the lower part of the uterus and is not involved in the fertilization process.
Correct Answer is C
Explanation
a. Pulls the edges of the wound together: Wound closure is a later stage of healing, not a primary function of inflammation.
b. Causes bleeding to clean out the wound: While some bleeding might occur initially, inflammation doesn't actively cause bleeding to clean the wound.
c. Cleans out debris and toxins from the wound: Inflammation is a natural response to injury or infection. It involves increased blood flow, redness, swelling, and heat. This process helps to deliver white blood cells and other immune factors to the area to fight infection and remove debris and damaged tissues, promoting healing.
d. Builds the scab to protect the wound: Scab formation is a result of dried blood and plasma, not a direct effect of inflammation.
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