Which type of membrane would be lining the respiratory tract?
mucus
synovial
serous
peritoneal
The Correct Answer is A
A. mucus: Mucous membranes line body cavities that open to the exterior, such as the respiratory, digestive, and urogenital tracts. They contain goblet cells that secrete mucus.
B. synovial: Synovial membranes line joint cavities and produce synovial fluid, not found in the respiratory tract.
C. serous: Serous membranes line body cavities that do not open to the exterior (e.g., pleura, pericardium, peritoneum) and secrete a watery fluid, not mucus.
D. peritoneal: The peritoneal membrane is a type of serous membrane lining the abdominal cavity, not the respiratory tract.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. edema
Edema involves fluid accumulation and can contribute to swelling and immune cell movement, but it does not directly wall off the injury site.
B. vasodilation of blood vessels
Vasodilation increases blood flow to bring immune cells and nutrients, but does not physically isolate the injury.
C. formation of a clot
A blood clot forms a physical barrier that helps prevent the spread of pathogens and walls off the injury.
D. all of the above
While A and B support inflammation and healing, only C directly achieves the goal of physically walling off the injured area. Therefore, "all of the above" is in
Correct Answer is E
Explanation
A. pollination
This refers to the transfer of pollen in plants; unrelated to skin physiology.
B. keratinization
Keratinization is the process by which skin cells produce keratin and move upward in the epidermis, but it does not refer to shedding.
C. denaturation
Denaturation refers to the alteration of protein structure due to heat, pH, or chemicals-doesn’t apply to normal skin turnover.
D. germination
Germination refers to seed sprouting in plants, not skin cell behavior.
E. desquamation
Desquamation is the shedding of dead, keratinized cells from the outermost layer of the skin (stratum corneum).
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