As Shown in This Figure, Facing a Potentially Threatening Stimulus $\rightarrow$

question 139

Multiple Choice

As shown in this figure, facing a potentially threatening stimulus, such as a snake dangling from a branch in front of you, activates two pathways in the brain. The direct pathway involves _____, and the indirect pathway involves _____.

• A) thalamus \(\rightarrow\) amygdala; thalamus \(\rightarrow\) visual cortex \(\rightarrow\) amygdala
• B) amygdala \(\rightarrow\) thalamus \(\rightarrow\) endocrine system; thalamus \(\rightarrow\) amygdala \(\rightarrow\) sympathetic nervous system \(\rightarrow\) endocrine system
• C) thalamus \(\rightarrow\) visual cortex\(\rightarrow\) amygdala; thalamus \(\rightarrow\) amygdala
• D) amygdala \(\rightarrow\) thalamus; amygdala \(\rightarrow\) visual cortex \(\rightarrow\) thalamus

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Definitions:

DNA Molecule

A DNA molecule is a complex, double-helical structure carrying the genetic information necessary for an organism's growth, development, functioning, and reproduction.

Gene

A sequence of DNA or RNA which codes for a molecule that has a function and is the basic physical and functional unit of heredity.

Natural Selection

a process by which evolutionary changes occur in species, where individuals with traits better suited to their environment are more likely to survive and reproduce.

Darwin's Theory

A scientific theory of biological evolution that explains how species evolve over time through the process of natural selection, survival of the fittest, and genetic variations.