The main responsible for the delay among the atrial and
ventricular contractions is the action potential conduction velocity of the AV
node cells. If the atria and ventricles contract simultaneously, atria cannot
give any help in filling the ventricles, which is needed, especially in those
with stiff ventricles as in the elderly. Hence atria have to contract first and
then the ventricles.
The correct answer is shiny
Answer:
Can please add some detail to your question...
Explanation:
Im guessing the increase of GMO foods and excess preservatives and chemicals that may provoke certain food intolerances and allergies.
Answer:
I'm pretty sure it is metamorphosis.
