Love is a very contradictory word. It can mean many things, depending on how you look at it. Of course, I don't love my boyfriend the way I love my dog, but I do feel affection towards both of them. To me, love is when you have feelings for something or someone that you just can't describe. It is a wonderful thing.
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Answer:
8: Superior vena cava
13: Aorta
11: Pulmonary valve
10: Left Pulmonary veins
9: Right atrium
12: Left atrium
7: Tricuspid Valve
6:Right ventricle
5: ?
3:Bicuspid valve
4:Chordae tendineae
2:Papillary muscle
1: Interventricular septum
Explanation:
Sorry if it's not right
Answer:
2.) histamine
1.) actually i don't know what number 1 is, all i know is number 2