Ber

[drdeb]

The basic electrical rhythm (BER) of the gastrointestinal
tract refers to:

A. rhythmic and spontaneous action potentials throughout the
gut.
B. spontaneous electrical activity which is initiated in
Cajal cells and then spreads from muscle cell to muscle
cell by gap junctions.
C. spontaneous hyperpolarizations of the circular smooth
muscle cells of sphincters.
D. rhythmic electrical potentials of the intrinsic neurons
of the gut.
E. rhythmic electrical potentials of the extrinsic neurons
coming to the gut from the CNS

if anyone knows it pls explain ....cause i dont know the answer too

[Sree Cheruku]

----it's A. I asked an internal medicine guy. The analogy they used was that the BER is like the SA node of the gut. It is therefore both spontaneous and rhythmic. It is also, according to the guy,

a. intrinsic
b. originates in the interstitial cells of cajal
c. spreads via gap junctions

that is one tough question...

[drdeb]

thanks for the answer
but if he says that it is also intrinsic ,from cajal cells and has gap junction.....then does that mean that the ans. may be also B?
plz do reply again