MRCP UK EXAMINATIONS

Detailed explanation-1: -The vasomotor center (VMC) is a portion of the medulla oblongata. Together with the cardiovascular center and respiratory center, it regulates blood pressure. It also has a more minor role in other homeostatic processes.

Detailed explanation-2: -The hypothalamus exerts a powerful excitatory or inhibitory effect on the vasomotor center. Thus it plays an important role in controlling the vasoconstrictor system. The basal sympathetic tone decides the cardiac contractility, arteriolar resistance in resting state.

Detailed explanation-3: -Within this region, discrete groups of neurons act to generate and maintain the sympathetic vasomotor tone and arterial blood pressure. The medulla oblongata also contains the main site integrating signals arising from high-and low-pressure baroreceptors and chemorecep tors afferents.