Examlex
What is the name of the mesoderm-derived, calcium-stiffened structures that comprise the internal skeleton of echinoderms?
Autonomic Nervous System
The part of the nervous system that controls involuntary bodily functions, like heart rate, digestion, and respiration, divided into the sympathetic and parasympathetic nervous systems.
Anxiety Disorders
A category of mental health disorders characterized by significant feelings of anxiety and fear, interfering with daily activities.
Identical Twins
Identical twins are siblings who develop from a single fertilized egg that splits into two, sharing 100% of their DNA and typically having very similar physical characteristics and, often, similar behaviors.
Post-Traumatic Stress Disorder
A mental health condition triggered by experiencing or witnessing a terrifying event, leading to persistent flashbacks, nightmares, and severe anxiety.
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