BARORECEPTOR REFLEXES
\bˈaɹɔːsˌɛptə ɹˈiːflɛksɪz], \bˈaɹɔːsˌɛptə ɹˈiːflɛksɪz], \b_ˈa_ɹ_ɔː_s_ˌɛ_p_t_ə ɹ_ˈiː_f_l_ɛ_k_s_ɪ_z]\
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A negative feedback system which buffers short-term changes in blood pressure. Increased pressure stretches blood vessels which activates PRESSORECEPTORS (baroreceptors) in the vessel walls. The net response of the central nervous system is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral vascular resistance and by lowering cardiac output. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure.
By DataStellar Co., Ltd
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