Hans Spemann and Colleagues Developed the Concept of the Primary

question 57

Multiple Choice

Hans Spemann and colleagues developed the concept of the primary organizer in amphibian embryos while studying the

• A) medial cells between the optic cups.
• B) anterior terminus of the notochord.
• C) lateral margins of the neural tube.
• D) posterior edge of the dorsal ectoderm.
• E) dorsal lip of the blastopore.

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Definitions:

Chemical Imbalance

A theory suggesting that mental health conditions are associated with the imbalance of neurotransmitters or other chemicals in the brain.

Biological Model

A framework for understanding psychological problems and behaviors through biological or physiological processes.

Severe Anxiety

A heightened state of excessive and intense fear and worry that significantly impairs day-to-day functioning.

Biological Perspective

A way of looking at psychological issues by studying the physical basis for animal and human behavior, including the brain, immune system, nervous system, and genetics.