you are stuck in traffic and it is getting close to class time

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all these words must be used:-

Adrenocorticotropic hormone (ACTH)
Bed nucleus of the stria terminalis
Behavioral Activation System (BAS)
Behavioral Inhibition System (BIS)
Cortisol
General adaptation syndrome
HPA axis
Immune system
James-Lange theory
Leukocytes
Limbic system
Melatonin
Parasympathetic nervous system
Psychoneuroimmunology
Stress