I think it’s because it’s kind of become some what of a norm to take medications and people don’t see it as too much of a risk to themselves
In simple term, Heart can be stated as the organ which pumps the blood and circulates the blood throughout the body and It prevents the back flow of blood from the left ventricle into the left atrium.
<u>Explanation:</u>
The Heart spreads the blood to our human body through two ways the right side and left side.
Right side:
- The right atrium receives the deoxygenated blood from our body than the right atrium contracts and then blood passes to the right ventricle.
Left side:
- To the other side of the pulmonary vein, the newly oxygenated blood moves to the left atrium.
- Then the left atrium contracts and it pushes the blood to the left ventricle, then left ventricle becomes full it then contracts and pushes the blood back to the body.
A.
The endurance of an athlete is dependent on his or her body's ability to uptake oxygen efficiently, a task carried out by the red blood cells.
<u>Answer:</u>
The factor that contributes to aging is: A Cells stop dividing after 50 divisions.
<u>Explanation:</u>
- Normally after 40 to 50 divisions the cells stops dividing because they had already lost too much DNA for other divisions.
- So they eventually die, making the appearance like an aged person in any individual.
- As DNA is copied in every cell division process, they tend to loose small part of telomeres in each transfer process.
- Hence, after 50 divisions these cells fails to divide resulting in aging.
