Question: Calculate the amount of current (in nA) that flows during one AP for the [Na+] if the AP lasts for 1 msec.
Vm=-70 mV
Vo= 40
Initial [Na+]= 15 mM
axon is 10 cm long
radius is 10 um
epsilon= 8.85E-12 C^2/ N m^2
dialectric constant is 3
Question: The loss of water during a hot day causes the blood volume to decrease and the osmolality of bodily fluids to increase. Discuss how antidiuretic hormone can help to maintain homeostasis.