The pericardial cavity has a pericardial fluid, which lubricates heart and prevents it from infection. The cavity is enclosed in a pericardial sac made up of two layers: fibrous layer and serous layer. Inside this pericardium, is the heart and its roots. In this accidental case, the heart is damaged due to breakage of the pericardium.
I mean no matter what they’re gonna still be drugs in the world. they don’t arrest smokers for smoking cigarettes even doe it causes lung cancer. and some drugs actually benefit a person, like weed. so maybe not hardcore drugs like cocaine because that’s like not good at all. but only the ones that have been tested to be used as a beneficial way
Answer: Asthma
Explanation: When you have asthma its hard to breathe you can't get oxygen into your lungs.
Please note I can only make out some of this, so here's the answers I can see-
Answer #5:
Left atrium, right atrium, left ventricle, right ventricle.
Answer #10:
1.2-1.5 gallons.
Answer #8:
White blood cells fight and kill off diseases.
I'll add more as I get it
EDIT!
Answer #4:
They assist in clotting your blood
Answer #14:
O, B, A, AB.