Examlex
Absorption of a photon of light causes the retinal pigment molecule to change shape.
Opposite Sex
Refers to the gender different from one's own; traditionally used in the binary context of male and female.
Psychosexual Stages
A theory proposed by Sigmund Freud, suggesting that an individual's personality develops through a series of stages during childhood, each characterized by sexual pleasure centered on a different part of the body.
Toilet Training
The process of teaching a young child to use the toilet for urination and defecation.
Anal
Relating to the anus, often used in medical or psychological contexts to describe related traits or behaviors.
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