What Sends Blood Back to Heart? Factors Affecting Venous Return | Muscle Pump, Respiratory Pump etc.

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Factors Affecting Venous Return:
The pressure gradient from veins to the heart drives blood flow from veins to the heart. Sympathetic activity causes vasoconstriction and thereby increases venous return. Valves in veins counteract the effect of gravity and help in venous return. Activity in nearby muscles increases blood flow in the veins, by a mechanism called a muscle pump or venous pump. Respiratory activity creates negative pressure in the thorax, which helps pull the blood from the lower extremities. And finally, the suction effect by the heart itself also contributes to the venous return.
Dr Vipul Navadiya
DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.

[@EmmanuelLyachu]

Good lectures🥰

[@debigdogk9563]

You alway make medical topics as easy as watching cartoons. Thank you for teaching 🙏🙏🙏🙏

[@kashafulain7224]

Tysm.....it helps alot....I literally watch almost 4 to 5 videos but this is the video from where I understand this topic ....

[@mazarosama5582]

The greatest explanation I have ever heard in my life. 👏👏👏Can you complete the rest of the physiological topics?

[@NonstopNeuron]

Yes. We will eventually cover all of it.

[@Dr_Priya__]

Thank you soooooooooo much &. I'm veryyy blessed to watch this video at my exam time & Thankyou so much for sharing your precious notes of this topic🙏🙏🙏🥺🥹

[@mayaalgreer8041]

Clear explanation everything mentioned in details, thank you 💗💗

[@abhisheksoni2305]

Please keep uploading the video do not leave it And video is awesome and gorgeous Easy understanding good way of explaining

[@nourhan_ahmed...]

thank you so so much, doctor ❤

[@technoworlddd]

Thnaks a lot ❤

[@johannarubin1980]

Could you explain how someone lying on their stomach for 16-20 hours a day for four months may have effected the venous pump? Muscle tone? Etc?

[@poojasoni4137]

Really good 👍

[@dhoom4824]

woow perfect , I appreciate your effort and I will support you 👏❤️

[@NonstopNeuron]

Thank you so much. Please share the channel with your friends and colleagues. It helps a lot.

[@manindersinghlearner2121]

Thankyou

[@kendall2004]

sir...i can't thank you enough

[@dot9826]

@5:54, it's just that the atrial ventricular valves are pulled towards the ventricles when the ventricles contract. But according to the video on atrial pressure changes during the cardiac cycle, I thought that a tree of ventricular vowel spoiled into the atria during ventricular contraction. Could you clarify?

[@NonstopNeuron]

During isovolumetric contraction, the valves bulge into the atria. And during the ejection phase, into the ventricles. It's mentioned so in video on atrial pressure. I hope that helps

[@Ritubhoje2]

Veins carry blood to body parts....so for legs we can say blood from heart goes to the legs....but then valves should prevent backflow of blood to heart right? How do valves allow blood to move only in one direction ie towards the heart?

[@NonstopNeuron]

It's already explained.

[@aleenakhalid1183]

Veins carry blood towards the heart from the body hence the valves ensure the flow is unidirectional i.e; towards the heart