Doc, I enjoy your lectures. It brings me fresh knowledge reminding me why I'm fascinated in learning medical stuffs. Bec in med school, too much assignments or work outputs, it fatigues me instead. I hope you upload more videos like this doctor. If I may request, can u do a vid for ENT or Head and Neck? Again, thanks a lot!
Was looking for a simpler explanation that I could understand, dear doctor that was simply splendid. Also enlightened me more than any number of articles and advice out there on why I actually have to get off my ass and get moving or at least move legs about and deep breathe. Thank you so much doctor! Maybe med students and docs already know why, but they don't tell us why...
Hello Dr. John Campbell. 2.05: when you breath out diaphragm goes down is not clear to me. Otherwise am always a greatful beneficiary of your wonderful clips.
Don't confuse velocity with flow. The velocity of flow through the larger veins (cm/min) is indeed higher than in the capillaries, but the FLOW (ml/min) is the same. Flow = velocity * surface area: cm^3/min = cm/min * cm^2.
it also seems hard for me to believe that respiratory pump + muscle pump = force of heart contractions. Because i mean if the venous return is less than the cardiac output, well i dont know if that's possible, but it seems like it would lead to some dangerous complications
+oopalonga No, the forces generated are not the same, the pressure in the veins, generated by the mechanisms of venous return are much less than the pressure in the arteries, generated by the force of ventricular contraction. pressure in veins is only a few mmHg as opposed to the MABP of about 100mmHg. You are correct however, is saying the volumes are the same, they have to be.
Brittany McCoy I noticed that as well, but doesn’t matter it’s just a simple mistake but he’s really great at explaining the concepts. At least he’s better than many uni doctors an lecturers
@@getnetberihun1177 I think she pointed that out for students that might be confused by the explanation, not necessarily complained about his teaching style, which was great.
ok, so i get that when we inspire, the pressure inside the lungs must be less than atmospheric pressure--otherwise air isn't going to enter into the lungs, but at the same time, once there's air in the lungs--isn't the intrapleural pressure subsequently increased, since both the lungs, whcih are like balloons, now expanded with air?
+oopalonga I think the intrapelural pressure stays much the same at about -4 mmHg. This is why the parietal and visceral membranes are always in contact, being sucked together.
Wow. That was great an so clear and clean with no extra words
Thank You! Perfect explanation for a Nursing Student!
Respiratory pump explanation was clear and simple. Thank you!
Clear, simple, and perfectly paced. Thanks, doc!
Doc, I enjoy your lectures. It brings me fresh knowledge reminding me why I'm fascinated in learning medical stuffs. Bec in med school, too much assignments or work outputs, it fatigues me instead.
I hope you upload more videos like this doctor. If I may request, can u do a vid for ENT or Head and Neck? Again, thanks a lot!
Was looking for a simpler explanation that I could understand, dear doctor that was simply splendid. Also enlightened me more than any number of articles and advice out there on why I actually have to get off my ass and get moving or at least move legs about and deep breathe. Thank you so much doctor! Maybe med students and docs already know why, but they don't tell us why...
Thank you sooo much Dr. for this video, things become more clearly now, Great explanation! 💜👌
Thanks Dr.John Campbell
Thanks great dr john Campbell for your valuable knowledge sharing 12/06/2022
thank you so much for the great explanation .
thanks allot, great and simple explanation
Great explanation !!
Dr campbell plz tell me when we breath out diaphragm goes up ????
Hello Dr. John Campbell.
2.05: when you breath out diaphragm goes down is not clear to me. Otherwise am always a greatful beneficiary of your wonderful clips.
Yes, you're right. Don't get confused. He made a little mistake in there. But him saying pressure in abdominal cavity will be reduced is right.
Don't confuse velocity with flow. The velocity of flow through the larger veins (cm/min) is indeed higher than in the capillaries, but the FLOW (ml/min) is the same. Flow = velocity * surface area: cm^3/min = cm/min * cm^2.
it also seems hard for me to believe that respiratory pump + muscle pump = force of heart contractions. Because i mean if the venous return is less than the cardiac output, well i dont know if that's possible, but it seems like it would lead to some dangerous complications
+oopalonga No, the forces generated are not the same, the pressure in the veins, generated by the mechanisms of venous return are much less than the pressure in the arteries, generated by the force of ventricular contraction. pressure in veins is only a few mmHg as opposed to the MABP of about 100mmHg. You are correct however, is saying the volumes are the same, they have to be.
Thank you soo muchh 😮😮
Thanks so much
thank you soooooooo much
2:00 sir, when you're going to breathe out, diaphragm will go up not down.
He makes a mistake and say when you breathe out the diaphragm goes down at 2:03
U got him but focus on other aspect of his excellent explanation
Brittany McCoy I noticed that as well, but doesn’t matter it’s just a simple mistake but he’s really great at explaining the concepts. At least he’s better than many uni doctors an lecturers
@@getnetberihun1177 I think she pointed that out for students that might be confused by the explanation, not necessarily complained about his teaching style, which was great.
Yeah and thanks for your correction
@@getnetberihun1177 yeah any one mistake except prophet and God
British Batman.......
Really informative though...
My name is Bond,
James Bond.
human body is so smart
but we are smarter to discover this lol
Not sure about that one, I don't feel too smart.
ok, so i get that when we inspire, the pressure inside the lungs must be less than atmospheric pressure--otherwise air isn't going to enter into the lungs, but at the same time, once there's air in the lungs--isn't the intrapleural pressure subsequently increased, since both the lungs, whcih are like balloons, now expanded with air?
+oopalonga I think the intrapelural pressure stays much the same at about -4 mmHg. This is why the parietal and visceral membranes are always in contact, being sucked together.
Breathe in - diaphragm flattens