<span>The lungs are the respiratory structure that controls breathing. They make up a substantial part of the respiratory system, along with the trachea, the ribs, the intercostal muscles and the diaphragm. Each lung contains small tubes called bronchioles which end in air sacs called alveoli.</span>
There should be options to choose from with this question. I found them elsewhere.
A) Nicotine
B) Caffeine
C) Heroin
D) Marijuana
The answer is heroin. Heroin use can cause damage to many organs with your kidneys and liver being two. Heroin can be quite destructive to the body in ways that the body unfortunately may never recover from. Significant damage to the liver and kidneys is irreparable and in some cases transplants might be needed or having to take certain types of medication to keep them from failing completely.
Answer:
A. . Blood from the veins enters the ventricles.
C. Atria push blood into the ventricles
Explanation:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
1. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle through the tricuspid valve.
2.The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve.
3. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve.
4. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
If it's a general question, I can only lift 20lbs safely. Daily I can only lift 10lbs on a regular basis.