BIOC34H3 Lecture Notes - Lecture 9: Trachea, Angiotensin-Converting Enzyme, Vasoconstriction
14 Feb 2017
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Document Summary
Low blood pressure can kill very quickly. There are baroreceptors in the aortic arch; curve of the aorta. These receptors are well position to detect changes in blood pressure. Coming up the aorta are 2 carotid arteries which split into internal and external. Pressure receptors within the carotid sinus which monitors pressure changes going to the brain. Higher brain sensors are not critically important in our cardiovascular and respiratory system. Hypothalamus is responsible for body temperature, to dissipate heat we redirect blood flow towards the skin. Nts is an important cardiovascular and respiratory centre. Input going from nts to the cvlm, which then sends input to rvlm. Proprio receptors in skeletal muscles, and the movement of muscles sends signals to the brain. If blood pressure goes up we get an increase in firing rate and the opposite when blood pressure goes down.
