An action potential is bounded by a region bordered on one extreme by the K+ equilibrium potential (-75 mV) and on the other extreme by the Na+ equilibrium potential (+55 mV). The resting potential is -60 mV.
report abuse it varies per person and per ethnicity average vagina is about 3 to 3 5 inches deep when unaroused but it can lengthen and widen several inches with arousal and childbirth usually around 7 inches deep with arousalthe average penis is only 5 5 6 5 inches and less than 1 % of the population has a penis over 8 inchesverage vagina is about 3 to 3 5 inches deep when unaroused but it can lengthen and widen several inches with arousal and childbirth usually around 7 inches deep with arousal
in positions where maximum penetration can occur such as doggy style or missionary the end of a normal sized penis 5 5 to 6 5 inches will reach the end of the vagina the cervical fornix when the penis is all the way in this has been confirmed by using ct scans and mrisith sexual a rousal the vagina expands in both length and width the average penis size varies but is measures on average 12 9 15 cm or 5 1 5 9 in length and is approximately 12 3 cm or 4 85 in in girth