MCQ IN MEDICINE

Detailed explanation-1: -Microorganisms capable of causing disease-pathogens-usually enter our bodies through the mouth, eyes, nose, or urogenital openings, or through wounds or bites that breach the skin barrier.

Detailed explanation-2: -Human skin serves as the first line of defence against microbial infection as a physical barrier; by secreting low pH, sebaceous fluid and fatty acids to inhibit growth of pathogens; and by possessing its own normal flora, thus deterring colonization by other pathogenic organisms (19).

Detailed explanation-3: -Skin is a barrier that serves as one of the body’s first lines of defense against harmful microbes. Specialized immune cells within skin tissue help to fight invading organisms.

Detailed explanation-4: -The most common primary skin pathogens are S aureus, -hemolytic streptococci, and coryneform bacteria. These organisms usually enter through a break in the skin such as an insect bite.