Diffusion refers to the net movement of molecules from higher to lower concentration. Diffusion may be a simple diffusion or . A simple diffusion is one in which that occurs unassisted. Facilitated diffusion in contrast is an assisted diffusion in a way that it requires a carrier molecule. For instance, polar molecules diffuse across a cell membrane through carrier molecules in the cell membrane.
Symptoms of Thanatophobia. The mere mention of death or images or thoughts thereof can trigger a crippling anxiety in the patient. Physical Symptoms: Dizziness, dry mouth, sweating, palpitations, nausea, stomach pain, trembling, sensation of choking, chest pain or discomfort, hot or cold flashes, numbness and tingling sensations.
Death anxiety is considered to play a significant role in the development and severity of a range of anxiety disorders (Arndt et al., 2005 ; Strachan et al., 2001), and it is also thought to exacerbate anxious responding in individuals with anxiety-related problems (Strachan et al., 2007).