Diffusion is the process that allows the exchange of oxygen and carbon dioxide in the alveoli. This process is one of passive transport.
Humatic lymphoid respiration.
Curiosity.
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The upper airway : hairs in the nose, mucus in the trachea & bronchia, the vocal cords (turbulence drives dust to the outside if the air flow)
solar energy
The energy from the Sun, solar energy drives all the process important to life on Earth.
concentration gradients, osmosis, and hydrostatic pressure
unequal heat ditribution
unequal heat ditribution
unequal heat ditribution
A mechanism is a process that drives or influences the outcome of an event.
The blood pressure in the capillaries at arterial end is about 25 to 30 mm of Mercury. The oncotic pressure of the plasma proteins is about 22 mm of mercury. So there is net force, which drives out the fluid in the interstitial space. The fluid is sucked back at the venous end of the capillaries by the oncotic pressure of the plasma proteins. It should be called as pressure gradient.
'''Hydrostatic and osmotic pressure gradients drive protein-free plasma from the blood across the walls of the glomerular capillaries and into the Bowman?s capsule.'''