The Graph Below Shows the Levels of Estrogen and Progesterone

question 3

Multiple Choice

The graph below shows the levels of estrogen and progesterone over the course of the menstrual cycle.

What event is caused by the rapid decrease in hormones in the region indicated by the arrow in the upper right portion of the graph?

• A) ovulation
• B) menstruation
• C) formation of the corpus luteum
• D) follicle maturation

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Definitions:

Classical Conditioning

A training method where a previously insignificant stimulus is linked with a significant one, gaining the ability to provoke comparable reactions.

Cat Food

A type of animal feed specifically formulated to meet the nutritional needs of domestic cats.

Backward Conditioning

A conditioning method where the unconditioned stimulus is presented before the conditioned stimulus, which is less common and generally less effective than forward conditioning.

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without any learning needed.