CTSS Neurobiological Impacts of Trauma

Question 1

Which brain structure is primarily responsible for processing and storing fear memories associated with traumatic experiences?

Accepted Answer

Amygdala

Answer

The amygdala is the brain's fear-processing center and is hyperactivated during and after trauma, encoding emotionally charged memories with heightened intensity.

Question 2

The hypothalamic-pituitary-adrenal (HPA) axis is primarily responsible for regulating which aspect of the trauma stress response?

Accepted Answer

Cortisol and stress hormone release

Answer

The HPA axis governs the release of cortisol and other glucocorticoids, which mobilize the body's resources during a stress response and can be dysregulated in chronic trauma exposure.

Question 3

During an acute trauma response, which branch of the autonomic nervous system is first activated to initiate the fight-or-flight reaction?

Accepted Answer

Sympathetic nervous system

Answer

The sympathetic nervous system is rapidly activated during perceived threat, triggering release of catecholamines and mobilizing physiological resources for survival.

Question 4

Which neurotransmitter is most directly associated with the hyperarousal and fight-or-flight response triggered by trauma exposure?

Accepted Answer

Norepinephrine

Answer

Norepinephrine (noradrenaline) is the primary catecholamine driving sympathetic activation during trauma, and its dysregulation is central to PTSD hyperarousal symptoms.

Question 5

Research consistently shows that chronic trauma and prolonged cortisol elevation result in what structural change to the hippocampus?

Accepted Answer

Decreased volume due to glucocorticoid neurotoxicity

Answer

Elevated glucocorticoids from chronic stress cause dendritic atrophy and impaired neurogenesis in the hippocampus, resulting in measurable volume reduction observed in PTSD neuroimaging studies.

CTSS - Certified Trauma Services Specialist Practice Test

CTSS - Certified Trauma Services Specialist Practice Test

CTSS Neurobiological Impacts of Trauma