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.
Corpus Callosum is a band of thick fibres which connects the hemispheres of the brain.
Well, if you look at the scientific process, the first step is to have a question to base it on.
Answer:
scavengers
Explanation:
these are the animals that feed on carrion, dead plants,or refuse.
