MEDICAL PHYSIOLOGY

PHYSIOLOGY

GASTROINTESTINAL PHYSIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
slow waves of smooth muscle cells of the small intestine are:
A
tonic contractions
B
physical contractions
C
resting membrane potential oscillations
D
none
Explanation: 

Detailed explanation-1: -The resting membrane potential of smooth muscle cells is between-50 and-60 mV. In contrast to nerves and other types of muscle cells, the membrane potential of smooth muscle cells fluctuates spontaneously.

Detailed explanation-2: -Slow wave potentials are undulating changes in the resting membrane potential in gastrointestinal smooth muscle responsible for triggering an action potential. They do not cause smooth muscle contraction until they reach a threshold potential to trigger an action potential.

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