Examlex
A researcher interested in patterning of the early neural tube identifies a new secreted factor expressed in the isthmus signaling center.Assuming that the newly identified factor plays a role in patterning,which axis of the developing neural tube would you expect to be perturbed if this factor is inactivated?
Posttraumatic Stress Disorder (PTSD)
A mental health condition triggered by experiencing or witnessing a terrifying event, characterized by flashbacks, nightmares, severe anxiety, and uncontrollable thoughts about the event.
Acetylcholine
Functioning as a key neurotransmitter, acetylcholine plays critical roles in the activation of muscle action, the workings of the parasympathetic nervous system, and cognitive function.
Second-messenger System
A mechanism by which neurotransmitters and hormones signal a cell to produce an internal signal in response to a message received at a cell receptor.
Ion Flow
The movement of ions across a membrane, critical for processes such as nerve signal transmission and muscle contraction.
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