Exchange Wrong Answerss Flashcards
adv of counter current system
blood and water flow in opposite directions maintaining the steepest concentration gradient at all times. blood always passes water with the highest oxygen concentration, diffusion occurs across the whole length of the lamellae
growth of xerophytic plants vs sunflowers
slower growth due to small number of stomata. growth may continue at lower water potentials due to adaptations in enzymes for photosynthesis and respiration
consequence of growing plants in soil with little water
closed stomata so no carbon dioxide upake for photosynthesis
journey of an oxygen molecule into the blood from the alveolus
diffuses across the alveolar epithelium and across the epithelium of the capillary
golgi apparatus role in micelle absorption
modifies the triglycerides and combines them with proteins, they become packaged for release
adv of micelles and droplets
droplets increase surface area causing a high, faster rate of hydrolysis.
micelles carry fa’s and mg’s to the membrane and release them so they can be absorbed by diffusion. micelles make them more soluble in water.
process of micelle absorption
combine bile salts with fatty acids/monoglycerides
make them more soluble in water
releases them across the membrane
absorbed by diffusion
reform triglycerides in cell
moved to membrane by vesicles
to improve scientific drawings
single lines, labels, scale, parts drawn to scale, no shading
lowest blood pressure of all vessels
the vena cava
action of the aorta
elastic recoil of the aortic wall maintains a steady/smooth rate of blood flow
highest ventricular pressure
left ventricle. it pumps blood to the entire rest of the body, not just the lungs.
how does AVV maintain a unidirectional flow of blood
closes when VP higher than AP
opens when AP higher than VP
binding of HmG for sigmoid dissociatin
the first oxygen to bind causes a change in the tertiary structure and causes another binding site to be uncovered so a second molecule can easily bind.
ventricular volume changes connected to valve openings/closings
Ventricular volume large = SL opens
Ventricular vol decreases after SL opens
AV shuts then SL opens
SL shuts then AV opens
consequence of a blockage in lymph system
excess tissue fluid cannot be reabsorbed