A lymphatic organ that helps develop the immune system is the thymus gland.
The most common and the most delicious substance are chocolates. Chocolates have plenty of chemical substance that could calm your brain and affects your body. It has Phenylethylamine substance that is actually produced by our brain when we are interested in something or when we are in love with someone. Chocolates are healthy.
B. A cushioned here cup to protect the heel from impact
Answer:
There are 2 Valve Systems
Explanation:
The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers).