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.
Anxiety and Panic Attack Symptoms List. 1  Smothering sensations and Shortness of breath. 2  Racing heart, slow heart beat, palpitations. 3  Chest Pain. 4  Lump in throat & Difficulty swallowing. 5  Skin losing colour (blanching). 6  Sweating. 7  Shaking or shivering (Visibly or internally). 8  Neck & shoulder pain & numbness in face or head.