I wish I could have you as my teacher. I'm refreshing to take the entrance test for nursing school. You make it really easy to understand. I find I like learning about the heart more than anything.
Took a&p couldn't understand the heart even failed the lab pratical. Watch this and finally understand but passed a&p 2 with an 86. I am studying this for my TEAS test.
Very good explanation regarding the pulmonary and systemic circulation of blood, conduction of of heart(pace maker system). Easy to understand. I have seen most of your videos. I really enjoy watching them. Tks for sharing.
Susanna, im studying to finish my R.N., I'm a 9 year stroke survivor, i lost my left side. I can't write well so that's why I do everything online!i'm hoping to maybe have you send your notes? if possible?
I'S GETING CLEARER, thanks. I'm experiencing dyspnea despite a 24/7 peak flow of 7-800. My breathing is short, ragged and rapid which makes me suspect some where along the line my heart is not providing sufficent oxygenaed. Any thoughs?. thanks and love
Dr excellent way of demonstration and explanation what a great feedback on circulating system you have provided in such a simple and easy to understand mode, lots of thanks and good wishes wish you a very happy new year although bit late, offer my compliments 07/01/2020
2:00 doesnt constriction cause higher blood flow and dilation cause lower? Wouldn’t the arterioles be dilated when rested and constricted while exercising?
Thank you for video! I just have one question, I’ve gotten the question of where gas exchange occurs and have seen that the answer was in the alveoli. I was wondering if you could clarify whether it’s in the alveoli or pulmonary capillaries? Thank you very much!
I think alveoli is like an organ / one of the parts of lungs and capillaries are one of the blood vessel so if the question ask which “organ “ helps exchange the air then you gotta choose the alveoli, the lung. Same thing if the question ask where does the air exchange occur in blood vessel then you need to say or pick capillaries to your answer. And yes they both works as air exchange but capillaries also exchange nutrients as well. That’s just my opinion, not sure though😅
Based on Susanna's other videos that I have watched, when you inhale, the gas goes from trachea -> primary bronchi -> tertiary bronchi-> bronchioles-> alveoli (which is a lot of cells spreading all over the surface) and right next to it is a layer of capillaries. The alveoli send oxygen into the blood at this site (facilitate simple diffusion for gas exchange) and at the same time, CO2 return to the alveoli (exhale) and go out of the body.
