Youâ€™re lying on your couch watching The Walking Dead when you hear loud pounding at your...

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Medical Sciences

Youâ€™re lying on your couch watching The Walking Dead when youhear loud pounding at your front door. As you leap to your feet,preparing to run like hell for the back door, gravity pulls theblood out of your brain sending it towards your feet, causing youto see stars and nearly black out. Baroreceptors in your carotidartery detect the drop in blood pressure and signal the medullaoblongata via the glossopharyngeal nerve. The medulla stimulatessympathetic nerves which increase your heart rate, and your bloodpressure begins to rise, just in time for you to remember that youordered a pizza.
1.) List the components of a feedback loop (stimulus, receptor,control center, effector and response) and then identify whichitems in this scenario are associated with each component.
2.) Is this a positive or a negative feedback loop? Explain youranswer.

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Baroreceptors are the receptors which give response to change in blood pressure Baroreceptors are also called pressoreceptors Location Depending upon the situation baroreceptors are divided into two types 1 Carotid baroreceptors situated in carotid sinus which is present in the wall of internal carotid artery near the bifurcation of common carotid artery 2Aortic baroreceptors situated in the wall of arch of aorta Nerve Supply Carotid baroreceptors are supplied by Hering nerve which is the branch of glossopharyngeal IX cranial See Answer

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