Answer:
Explanation:
These are arteries, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
The 3rd one, the one that begins with knowledge
A. Steroids are made from Male **x hormones.
Hope this helps, so sorry if it is incorrect!
Answer:
i would say they increase blood flow not entirely sure
Explanation:
bone health doesnt make sense at all
unbalanced diet? not really
prevent dizziness and fainting? dont know how that works out if it does please share
hope this helps a little.
The cells in the heart need a constant supply of nutrients / oxygen and to get rid of their waste products ans that why it needs its own special circulatory system.
