A rattlesnake, for instance, has one small pit on each side of its head, filled with thousands of receptor cells, which are actually microscopic-sized infrared sensors. 例如響尾蛇在頭部兩側小凹坑裡的器官充滿數千個受體細胞，這實際上就是顯微的紅外線感受器。
The heart rate and venous tone were controlled by high-pressure receptor baroreflex, while the peripheral resistance was controlled by high- and low-pressure receptor baroreflexes. 其中，心率和靜脈緊張度受動脈壓力感受器反射控制，而外周阻力則同時受動脈壓力感受器和心肺壓力感受器的反射控制。
