Which of the Following Is/are Commonly Seen on the Lateral

question 10

Multiple Choice

Which of the following is/are commonly seen on the lateral neck x-ray of a patient with LTB?
1) "Pencil point" narrowing of the upper airway
2) Haziness in the subglottic area
3) Classic "thumb sign"
4) "Steeple point" narrowing of the upper airway

• A) 3
• B) 2, 3
• C) 1, 2, 4
• D) 2, 3, 4

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Definitions:

Wind Pollinated

Refers to plants that rely on wind to disperse their pollen as a means of fertilization, rather than depending on animals or insects.

Low Fitness

Refers to individuals having fewer offspring than average, contributing less genetic material to the next generation.

Resistant Populations

Groups of organisms that have developed the ability to withstand environmental pressures, such as chemicals or diseases, that would normally be harmful.

Directional Selection

A type of natural selection in which one extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.