Baroreceptor reflex for Short term regulation of blood pressure

Baroreceptor reflex for Short term regulation of blood pressure

Baroreceptor reflex for Short term regulation of blood pressure

Explore our entire animation video library at: https://www.nonstopneuron.com/
All videos from cardiovascular physiology: https://www.nonstopneuron.com/post/ph…

Video Summary:
Its a concept map of baroreceptor reflex. Baroreceptor reflex brings about short term adjustments in blood pressure. It targets heart and blood vessels. Baroreceptors are located at carotid sinus and aortic arch. They send information about status of stretching of vessel wall to medullary cardiovascular control centers. They plan the response and send the information via autonomic afferents. Finally blood vessels and heart makes adjustments to bring the blood pressure back to normal.

• Renin Angiotensin Aldosterone System (RAAS):    • You Will Be Able To ANSWER ALL QUESTI…  

● Random Mind maps \u0026 Concept maps:
• Red Blood Cells (Erythrocytes) Concept Map:    • Red Blood Cells (Erythrocytes) Concep…  
• Erythropoiesis Concept Map:    • Erythropoiesis Concept Map  
• Iron Absorption, Transport And Storage:    • Complete Concept Map on: Iron Absorpt…  
• Nitrates | Mind Map:    • Nitrates | Mind map  
• Calcium Channel Blockers | Mind Map:    • Calcium Channel Blockers | Mind map  

● Follow me at:
• Facebook: https://www.facebook.com/NonstopNeuron
• Instagram: https://www.instagram.com/NonstopNeuron/

DISCLAIMER: This video is for education purpose only. Although every effort is made to ensure accuracy of material, viewer should refer to the appropriate regulatory body/authorised websites, guidelines and other suitable sources of information as deemed relevant and applicable. In view of possibility of human error or changes in medical science, any person or organization involved in preparation of this work accepts no responsibility for any errors or omissions or results obtained from use of information in this video.


Content

0.861 -> Hey guys, today we will build concept map of baroreceptor reflex.
5.278 -> So lets start.
7.02 -> Baroreceptor reflex is responsible for short term regulation of blood pressure.
11.677 -> As you might be knowing, regulation of blood pressure involves short term regulation
16.067 -> and long term regulation.
18.136 -> Long term regulation is done by renin angiotensin aldosterone system.
22.182 -> And it targets kidney.
23.942 -> Short term regulation on the other hand targets heart and blood vessels
27.436 -> as we will see next.
28.986 -> Baroreceptor reflex is just like any other reflex and it has receptors, afferent pathway,
35.456 -> coordinating centers, efferent pathway and effector organs.
40.43 -> Starting with receptors.
42.594 -> Receptors in this reflex are of course, baroreceptors.
46.54 -> Baroreceptors are basically stretch receptors or mechanoreceptor
50.816 -> and they are sensitive to stretch in vessel wall.
53.426 -> In body we have carotid sinus baroreceptors, located at carotid sinus.
57.874 -> And aortic baroreceptors, located at aortic arch.
61.874 -> Sudden increase in mean arterial pressure causes
64.582 -> increased stretching of carotid sinus
66.884 -> which leads to increased impulse generation from carotid baroreceptors.
71.395 -> Same goes for aortic arch baroreceptors.
74.047 -> Increased pressure causes increased stretching
76.653 -> which increases firing from baroreceptors.
79.393 -> Now these impulses travel along afferent neurons.
82.962 -> Neuron from carotid baroreceptors are located in glossopharyngeal nerve.
87.26 -> And those from aortic baroreceptors are located in vagus nerve.
92.282 -> These neurons go to nucleus tractus solitaries in medulla.
96.273 -> This nucleus gives rise to excitatory interneurons and inhibitory interneurons.
101.916 -> Excitatory interneurons cause stimulation of cardio-inhibitory area.
106.209 -> This leads to increased parasympathetic outflow which is carried by vagus nerve.
111.25 -> Inhibitory interneurons inhibit vasomotor area and cardio-acceleratory area.
117 -> This leads to decreased sympathetic outflow which is carried by spinal nerves.
122.713 -> Due to decreased sympathetic outflow, there will be vasodilatation.
126.733 -> It includes arteriolar dilatation as well as venodilatation.
131.31 -> Arteriolar dilatation decreases total peripheral resistance.
135.279 -> Venodilataion causes decreased venous return
138.07 -> which in tern causes decreased stroke volume.
140.595 -> Decreases sympathetic stimulus to heart deceases heart rate and stroke volume.
145.658 -> Increased parasympathetic stimulation also produce same effect on heart.
150.326 -> Due to decreased heart rate and stroke volume,
152.718 -> there will we decreased cardiac output.
155.864 -> Decreased cardiac output along with decreased total peripheral resistance
159.569 -> bring about decrease in mean arterial pressure
161.961 -> which finally balances the initial rise in blood pressure.
165.718 -> So that was the entire reflex.
168.18 -> Before finishing, lets connect final few pieces of information.
172.023 -> In this entire pathway this area represents receptor activity.
175.973 -> Here we have afferent pathway that includes glossopharyngeal and vagus nerve.
180.638 -> Co-ordination centers are medullary cardiovascular centers shown in this area.
185.492 -> Afferent pathway involves autonomic afferents.
188.144 -> Finally effectors organs are heart and blood vessels as shown in this part.
193.326 -> That’s it.
194.538 -> This completes our concept map of baroreceptor reflex.
197.731 -> If you found this video helpful, please share it with your friends.
200.681 -> And don’t forget to subscribe because lots more to come.
203.404 -> Thanks for watching, see you in next video.

Source: https://www.youtube.com/watch?v=rUpnD7FIksw