The Stage of Human Development in Which the Endoderm,mesoderm,and Ectoderm

question 14

Multiple Choice

The stage of human development in which the endoderm,mesoderm,and ectoderm form is the

• A)zygote.
• B)gastrula.
• C)embryonic stage.
• D)ovum.
• E)fetal stagE.

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Definitions:

Conditioned Stimulus

A stimulus that was originally neutral but, after association with an unconditioned stimulus, leads to eliciting a conditioned response.

Classical Conditioning

A fundamental learning technique established by the association between an initially neutral stimulus and a naturally occurring stimulus, leading to a learned response.

Acquisition

In psychology, the initial stage of learning or conditioning during which a response is established.

Extinction

In psychology, the gradual weakening and eventual disappearance of a conditioned response.