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.
Hmmm let me think.........
Answer:
they both have nucleus, cytoplasm, cell membrane and mitochondria
Explanation:
<span>For the above question,it is an example of negative feedback.Cholesterol with high content is dangerous to our body which can cause heart attack and stroke.Mainly cholesterol causes due to poor diet and consuming high fat content foods.High cholesterol will also cause blood problems like blood flow will be harder to pass through arteries.</span>
The following should not be used to reduce the resistance of going to bed for a young child.
<u>Explanation: </u>
- If the child feels sleepy at 10.30 pm and you want the child to sleep at 8.30 pm, never force them to the time you want them to good to bed. instead, make the time they feel sleepy as temporary bedtime.
- Never to feed them with the heavy diet for making them fall asleep may extend the time of the digestion process or lead to stomach illness during late night.
- Avoid stimulating high energy activities like playing outside, running around, watching exciting TV shows.
- Don't discuss or argue about bedtime with your child.
- Once the child is put to bed immediately leave the room if not that will not allow the child to fall asleep soon
.
