The startle reflex is an involuntary response to sudden stimuli, often characterized by a quick muscle contraction. This reflex can be influenced by various factors, including the complexity of ...
A reflex action follows this general sequence and does not involve the conscious part of the brain. This is why the response is so fast. Receptor in the skin detects a stimulus (the change in ...
The Bainbridge reflex (aka, atrial reflex) occurs when the heart rate increases in response to a rise in atrial pressure. This is a compensatory mechanism since increased right atrial pressures ...