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Answer:
A viral sinus infection can develop into a bacterial infection, which typically lasts longer than 10 days. Patients will usually respond to antibiotics within two to three days after a bacterial sinus infection is diagnosed and treated. After that, sinus infections can resolve anywhere between seven and 14 days.
Answer:
The correct answer is A, as the statement is true. All blood returns to the heart by way of either the superior vena cava or the inferior vena cava.
Explanation:
The heart pumps blood to all parts of the body. Blood supplies oxygen and nutrients to the entire body and removes carbon dioxide and residual elements. As blood travels through the body, oxygen is consumed and blood becomes deoxygenated.
Deoxygenated blood returns from the rest of the body to the heart through the superior vena cava and the inferior vena cava, the two main veins that carry the blood back to the heart.
It is true that the primary function of the humoral, or antibody-mediated, immune response is to control freely circulating pathogens.
What is humoral immunity?
Humoral immunity is the immunity to infection due to antibodies, which circulate in the blood and lymph, and which are produced by B cells.
Generally, immunity is the resistance of an organism to disease-causing agents or foreign substances.
However, the humoral immune system deals with antigens from pathogens that are freely circulating, or outside the infected cells.
Learn more about humoral immunity at:
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Answer:
Choice D
Explanation:
The tenth amendment states that "the powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."
Answer choice D best summarizes that powers not given to the federal government, is given to the states or the people.