- Fill in the gaps in the paragraphs below:
Blood pressure can be regulated by the nervous system, in particular the ______sympathetic _________ nervous system. Initially changes to blood composition and pressure can be detected by ____receptors________________: ____baroreceptors________________for pressure, ____chemoreceptors________________for chemical changes, _____thermoreceptors_______________for temperature, and _____mechanoreceptors_______________for movement.
These changes are collected by the medulla oblongata in the brain, which will initiate the ____vagus________________nerve to reduce blood pressure or the ____postganglionic accelarator________________system to increase it.
So when blood pressure is high, the ____parasympathetic system is used, heart rate _____decrease and the systolic blood pressure ___decrease_________________.
When blood pressure is too low, the sympathetic nervous ____________________system takes over, heart rate and contractility ________blood pressure____________, and _____vasodilation_______________occurs in the blood vessels.
Step by step
Solved in 3 steps
