Читать книгу Manual of Equine Anesthesia and Analgesia - Группа авторов - Страница 375

 Arterial baroreceptors are stretch receptors located in the carotid sinus and aortic arch to detect changes in arterial blood pressure.

 When arterial blood pressure increases, arterial baroreceptors are stretched and signals are transmitted to the brain stem, which inhibit the SNS impulses to the heart and blood vessels, and increase vagal tone on the SA node of the heart, which results in bradycardia to correct the increase in pressure (baroreceptor reflex).

 When arterial blood pressure decreases, arterial baroreceptors sense the decrease in tension and signal the vasomotor center to facilitate SNS activity in the heart and blood vessels and decrease vagal tone, causing an increase in heart rate to correct the decrease in pressure.

 Venous baroreceptors, located in the right atrium and great veins, increase heart rate when the right atrium is stretched by increased filling pressure (Bainbridge reflex).