BISC306 Lecture Notes - Lecture 25: Carotid Sinus, Blood Pressure, Vascular Smooth Muscle

• School: University of Delaware
• Department: Biological Sciences
• Course: BISC306
• Professor: Cain William

Document Summary

Control of cardiovascular system: by controlling heart a. i. Vasoconstriction/dilation: cardiac muscle or vascular smooth muscle is controlled by cns, medullary cardiovascular center d. i. Pattern is controlled by heart itself: where would you measure bp to control cardiovascular system e. i. In big arteries; the pressure the heart is putting on the arteries e. ii. Central arteriole pressure on left side e. iii. Arterial baroreceptors send information back to the medullary cardiovascular center, and compares to set point, and decides whether to increase or decrease e. iv. High pressure baroreceptors are found in systemic arteries: stretch receptors send information back by the x nerve (vagus) and ix nerve, carotid sinus place where you monitor pressure; right next to the heart. Increased stretch causes increased firing of high pressure baroreceptors: measure ap"s on those two nerves and how they coordinated with bp, as pressure goes up, ap goes up.