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.
Answer:
I think that it is closest to the sun.
Explanation:
it is the second closest planet to the sun.
Answer:
Explanation:
It is beneficial to know if mutation is the cause of a particular ailment or an individual carries a mutated gene because it gives a clear direction on what the problem is an how it can be resolve of possible.
We have the sex cell and somatic cells, some mutation affects sex cells, while some somatic cells. If a mysterious affect sex cell there is every possibility of it being inherited by the offspring hence adequate knowledge about a mutant gene being in the body can help guide against some further re-occurence.
Negative effect is fear, it creates fear in an individual who has it.
It can lead to depression when an individual becomes traumatize due to his state.
<span>a mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote. b.
</span>
