Physiology 2, another 10 points less to become learned

And now even the rock of physiology 2 is history. Yes, I could have done in April, you would have been able to do in the first or second summer session. I did it today. Back to square one. We come to the question

  • The glomerulus. Well you do, there is something here to talk about what you want. I interrupted me when I was starting to talk about how the ultrafiltrate is modified in various tubular sections.
  • What are the mechanisms that maintain a constant hydrostatic pressure in the glomerular change in blood pressure? Here I talked about the adjustment of the diameters of afferent and efferent arterioles, and it was not enough. I tried to introduce the circuit renin - angiotensin - aldosterone but it was not. I gave an answer that, with the benefit of hindsight it was the right one for me but take it with feet of lead. The answer that I gave when I then gave the input to think about the only vascular circuit is that the capillaries are glomerilari in parallel so that the resistance decreases (1 / RT = 1 / R1 + 1 / R2 + ...). For him this was the answer, and here we stopped. According to me means that since I have so many resistors in parallel decreases the total resistance to me, if I close the elements in parallel can modulate the resistance of the circuit and thus modulate the internal hydrostatic pressure. But as I close them these circuits? With mesangial cells that are of the pressure sensors and have elastic capacity and can thus close or open the capillaries of the circuit. It was the answer I had tried to give up but he mesangial cells have nothing to do
  • Cellular respiration. Here I started talking about the interface socket / jar but then I realized that I wanted to know how they behaved oxygen and carbon dioxide in this interface and how it moves in one direction and another. The partial pressures and positioning in the blood explain everything.
  • As ever, we only positioning in the 100 mmHg oxygen? Because first of the partial pressure of oxygen in air is about 160 mmHg. In the airways there is a theft mmHg by the pressure of water vapor and a part is stolen by the fact that the carbon dioxide concentration is much greater than in air.
  • What is this percentage? I told him that since we exhale about 4% CO2, I supposed it was around 6%. It went well.

Few questions, I believe that the examination lasted about ten minutes, but in short, he understood that the preparation was.

Twenty-eight, handshake and greeted me with an " ad majora " :-) . Tano, a great prof. Next time, next place.

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