Which stage of swallowing is shown here? 
Definitions:
Psychological Stressors
Events, situations, or stimuli that cause stress and can affect an individual's psychological well-being.
Immune System
The body’s defense mechanism against infectious organisms and other invaders, comprising various cells, tissues, and organs that work together to protect the body.
Infectious Agents
Microorganisms or pathogens that cause diseases or infections in humans, animals, or plants, including bacteria, viruses, fungi, and parasites.
Post-traumatic Growth
A positive psychological change experienced as a result of the struggle with highly challenging life circumstances.
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