Answer:
I think its A
Explanation:
Sound dental sterilization practices in dentistry protect patients, dentists and the whole team. They prevent the growth of bacteria on instruments and surfaces throughout the dental practice. Microorganisms in blood and saliva can carry bacteria and diseases like hepatitis, herpes, tuberculosis, staph and strep.
It helps prevent illness because they washed their hands and if they didn't 1 that would be nasty and 2 no one want pee or poop on their food that they are going to eat.
Its usually about 80 pounds but can also range from 60-120
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.
<span>The function of the medulla, or the medulla oblongata is to control all the involuntary movements in the body. This includes things both serious and not so serious things, ranging from controling our breath and heart blood pumping, to simpler yet important things like blinking. If we don't control it wilfully, it's done by the medulla.</span>
