The low pressure receptors are

The low-pressure receptors are stimulated by atrial systole and diastole.. The low-pressure receptors are those in the great veins, right and left atria and pulmonary vessels. Atrial stretch receptors are of two types: Type A: discharge primarily during atrial systole . Type B: discharge primarily during late diastole. Distension of the atrial walls - stimulation of atrial receptors - vasodilatation, fall in BP and increased hea rate. Ref: Ganong review of Medical Physiology 26th edition Pgno: 577,578