Answer: Certain pathogens enter and multiply within the human body.
Explanation:
Infection or invasion of a pathogen inside the body of the human host does not necessary causes the disease. Instead the multiplication and colonization of these pathogens inside the body of the human host is responsible for disease. This is because of the fact that the pathogen's cells multiply and invade the healthy cells of the human host. This process weaken up the host immune system. This process leads to the occurrence of signs and symptoms of the disease.
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.
Equipment
drink bottles
people
and coaches
Answer:
Violence, or any harm being to a Human
Explanation:
Think about flight or fight. They either walkaway from the situation, or they fight and face the consequences.
