Testosterone Is an Example of a Chemical Signal That Affects

question 21

Multiple Choice

Testosterone is an example of a chemical signal that affects the very cells that synthesise it, the neighbouring cells in the testis, along with distant cells outside the gonads. Thus, testosterone is an example of ________.
I. an autocrine signal
II. a paracrine signal
III. an endocrine signal

• A) only I and II
• B) only II and III
• C) only I and III
• D) I, II, and III

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Definitions:

Mental Processes

The internal, covert activities of the mind, such as thinking, feeling, and reasoning.

Ethology

The study of behaviors that are specific to a species.

Psychosexual Development

The process by which libidinal energy is expressed through different erogenous zones during different stages of development.

Species-Specific Behaviors

Actions or reactions that are characteristic to a particular species, often innate and crucial for survival, such as mating rituals or territorial defense.