Answer: 4
example: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 ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated. The heart has four chambers: two atria and two ventricles.
The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle.
The right ventricle pumps the oxygen-poor blood to the lungs.
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.
The left ventricle pumps the oxygen-rich blood to the body.
Because there could be unseen blood mixed with the fluids. Hope this helps!!
Answer:
hypoglycemia or hyperglycemia
Explanation:
:)
Prepare for emergencies.
Use night lights.
Treat slippery or uneven surfaces.
Adjust the home phone and voice mail settings.
Keep stairs safe.
Install smoke alarms and carbon monoxide detectors.
Check the locks.