1. All veins have one way valves which prevent back flow 2. Two systems of veins (superficial and deep) Deep veins are inside muscle so when muscle contract high pressure is imposed on the deep vein which propels them back to the RA. Superficial veins usually feed into deep veins. Lack of muscle contraction could cause DVT (Stasis of blood leads to thrombus which travels in to RA then into lungs where it leads to a pulmonary embolism) 3. Varicose veins: when valves fail blood regurgitates from deep back into superficial and keeps back flowing as more valves fail. Keep muscle active, but some component is genetic
@Campbellteaching4 жыл бұрын
Sounds good
@313pookie3136 жыл бұрын
for me, it's equally important to have someone with a clear speaking voice explaining each lecture. Dr. John Campbell has a great voice for this. Coupled with his knowledge, I am learning better here then in class... ;)
@Jay-Marlon3 жыл бұрын
you are an absolutely legend. Thank you for sharing your knowledge in the most perspicacious manner.
@mokopanewillylekalakala11756 жыл бұрын
Have been watching for just two minutes and can tell this is the best explaination m ever going to get😇😇 thanks for sharing
@alicerobinson95338 жыл бұрын
Amazing! You make it so simple and logical!
@AbhishekAr7503 жыл бұрын
So well explained....I am not from medical discipline but I do watch the videos related with the medical discipline...and Dr. Jhon I have found your videos to be so explanatory that I regularly watches your lectures...simple, clear and understandable lectures indeed...
@B3bita12155 жыл бұрын
Wow!! great job Dr. Campbell.
@pashteen83487 жыл бұрын
thanku so much now i got the real mech behind dvt nd physiology of calf muscle pump...... best wishes
@andresandres72673 жыл бұрын
I think i didn't close my mouth during the whole video. What a fascinating video, thank you for this.
@georgegarrett56267 жыл бұрын
Doing a biology degree, you give me such a better understanding then most of my lecturers!
@brianchv36615 жыл бұрын
Thank you, I really enjoy your teaching
@esrakarakaya48454 жыл бұрын
fantastic prof.Thank u for ur understandable videos. U are the best tecer i think.
@rosesrose5452 жыл бұрын
thank you so much for this information. please continue with the information as i am now seeing varicose veins that are moon shape in my thighs. i conveyed this to my regular doctor and she said i should see a vascular doctor. not enough information is given about this topic. i see many females particularly that have problems with veins and valves.
@tayla65777 жыл бұрын
Thank you very very much. An AWESOME explanation :)
@sylpascale76734 жыл бұрын
Thank you so much Doc, all of your videos are excellent and easy to follow and understand.
@Campbellteaching4 жыл бұрын
Thanks, do click some 'likes', this really helps the channel to grow.
@YB-lv6ks6 жыл бұрын
Amazing! Thank you!
@geojor8 жыл бұрын
important medical concept, thank you...
@danushkamahanama69737 жыл бұрын
Thank you sir !
@nellyhoffman61948 жыл бұрын
Thanks Doctor:)
@KakoAxladi4 жыл бұрын
Great video, thnx so much from a physio student
@bluesquirrel24726 жыл бұрын
Thank you!
@ketchup46183 жыл бұрын
this video changed my life and allowed me to cure my mums quadrilateralitateral cancerous boils
@ketchup46183 жыл бұрын
omg big pp
@gambart20027 жыл бұрын
great explanation, thanks.
@silviaboneva72834 жыл бұрын
Well explained :) Thank you!
@bettyjaden4405 Жыл бұрын
Well explained!!! Thank you very much
@bonnieinthespirit63734 ай бұрын
Dr. Thank you
@conradoalejofernandez93164 жыл бұрын
Great video!
@Coco1Lucy8 жыл бұрын
Fantastic explanation. Thank you.
@hemediramadhani88717 жыл бұрын
Coco1Lucy how are yiu
@justicea.d27905 жыл бұрын
Outstanding
@shashimoghe39202 жыл бұрын
Dr john Campbell sir very informative feedback as always in your videos thanks 12/06/2022
@RM-gm7lu8 жыл бұрын
thanks
@ananthaln50892 жыл бұрын
Thank you Sir
@bettyjaden4405 Жыл бұрын
You should also make a video on congestive heart failure... Thanks in anticipation
@eman.s.35908 жыл бұрын
Thank you
@hemediramadhani88717 жыл бұрын
Eman. S. how are you
@DivineMisterAdVentures Жыл бұрын
Did you mention SUCTION? Yep. Newly discovered relatively, or newly recognized, there is an actual UPDRAFT in the secondary cycle. The blood is not left with zero pressure from above, but with negative pressure, assisting or assisted from positive pressure by musculature of the calf and thigh - but it really a good question, isn't it. And it raises additional questions about venous disease progression, which cascades suddenly from simple edema and lack of reversal treatment - which by its nature must be a home medicine. And many other factors of blood, muscle, posture, and medicinals in therapy.
@absbse6 жыл бұрын
Thanks Dr Campbell, excellent explanation, can you please tell me which physiology book I can get this information from ?
@Campbellteaching6 жыл бұрын
You can order my Physiology Notes book from campbellteaching.co.uk
@walidragab21144 жыл бұрын
Does gravity support venous return to the heart? (Concerning the return of blood from upper body and superior vena cava to the heart)
@user-ri3bl8mw9u Жыл бұрын
Ma sha allah
@awesome4life6335 жыл бұрын
One thing I don’t get- how is venous return equal to cardiac output with so much lower pressures? Also, if muscles are not contracting, does cardiac output have to decrease since venous would decrease?
@3tapsnu0ut872 ай бұрын
Venous return. Can an injury flare up and accompanying inflammation cause this? If so, could this set off a veritable flood of sweating and a tingling, fizzing sensation?
@Fxb765 жыл бұрын
Dr the link of your book in the previous comments isn’t working could you sent me the link .
@Campbellteaching5 жыл бұрын
campbellteaching.co.uk
@psalmsraj1884 жыл бұрын
but sir, while walking the muscles are contracted and relaxed causing veins to draw blood towards Inferior vena cava. but while sleeping there is no muscle activity in out muscles and what causes the blood to go forward towards heart.
@capitalistcommie68464 жыл бұрын
While sleeping or even in lying down postion....effect of gravity is greatly reduced.....so not much effort is needed to send it to right heart...got it??
@psalmsraj1884 жыл бұрын
@@capitalistcommie6846 but still it needs some effects right? What muscles does that job?
@blackbutterfly555 жыл бұрын
What happens if someone's leg gets cut off
@Campbellteaching5 жыл бұрын
colateral circulation develops
@blackbutterfly555 жыл бұрын
Can you explain collateral circulation further
@srpfitnesslondon88408 жыл бұрын
I suffer with Vascular Malformation Venous Malformation and Muscular Malformation. Can you help me Dr ?
@Campbellteaching8 жыл бұрын
I wish there was something simple I could tell you SRP, but what you have told me are just descriptions, so there is nothing I can specifically say. The most important thing is to see a local specialist doctor who will be able to assess you on n individual basis. Have you done this? I wish you well.
@hemediramadhani88717 жыл бұрын
Dr. John Campbell wonderfull
@CLOUDKID114 жыл бұрын
1. All veins have one way valves which prevent back flow 2. Two systems of veins (superficial and deep) Deep veins are inside muscle so when muscle contract high pressure is imposed on the deep vein which propels them back to the RA. Superficial veins usually feed into deep veins. Lack of muscle contraction could cause DVT (Stasis of blood leads to thrombus which travels in to RA then into lungs where it leads to a pulmonary embolism) 3. Varicose veins: when valves fail blood regurgitates from deep back into superficial and keeps back flowing as more valves fail. Keep muscle active, but some component is genetic
@Campbellteaching4 жыл бұрын
I have put this on the video comments for all to see, if you are happy with this?
@CLOUDKID114 жыл бұрын
@@Campbellteaching For sure if you think it will be useful.