The First Line of Defense Against External Injury and Infection

question 35

Multiple Choice

The first line of defense against external injury and infection contains several thin layers of cells undergoing different stages of maturation.This first line of defense is known as the _______.

• A) sebum
• B) epidermis
• C) resident bacteria
• D) dermis

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Definitions:

Respondent Behavior

Behavior that occurs in response to specific stimuli and is usually conditioned by previous experiences.

Commonalities

The aspects, characteristics, or features that are shared among different people, groups, or things, pointing to a likeness or sameness.

Charles Darwin

A 19th-century naturalist best known for his contributions to the evolutionary theory, proposing that species evolve over time through natural selection.

Partial Reinforcement

A conditioning schedule in which only some responses are reinforced, often leading to more resistant behavioral patterns.