Answer: Option A
Explanation:
The T-cells and B-cells of the immune system are the part of specific immune response.
If the number of T-cells dies then the ability to activate B lymphocytes will also be lost as they help B-cells to secrete antibodies and macrophages to destroy the antigens.
T cells also helps in the activation of cytotoxic T-cells to kill the targeted cell which is affected by antigens.
hence, the correct answer is option A
A shock is a life-threatening problem occurs when vital organs are not receiving enough oxygen. The correct option is C.
<h3>What is a shock?</h3>
Shock is a life-threatening condition caused by a sudden reduction of blood flow through the body.
Trauma, heatstroke, blood loss, an allergic reaction, severe infection, poisoning, burn injuries, or other causes can all result in shock.
When a human is in shock, his or her organs are deprived of blood and oxygen.
Thus, the correct option is C.
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Answer:
Not all illegal drugs are abusive.
Answer:
Direct transmission is the way something is transmitted directly, like a illness given to you by touch.
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Example 1:
I got coronavirus through direct transmission when I hugged my infected friend.
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Example 2:
When I had pink eye, I forgot to wash my hands after reaching to scratch my diseased eye, and held my sister's hand. She ended up getting pink eye too, because of the direct transmission.
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I hope this helps!
-No one
Pregnancy has no effect on blood flow. receiving a blood transfusion increases blood flow greatly.
<h3>What is blood transfusion?</h3>
Intravenously putting blood components into a person's circulation is known as a blood transfusion. For a number of medical disorders, transfusions are performed to replenish lost blood components.
Patients who have sustained major injuries in vehicle accidents or natural disasters are treated with blood transfusions. Blood transfusions are frequently given to people who have a condition like leukemia or kidney disease, both of which can induce anemia.
Through a little tube inserted into a vein in your arm, donated blood is given to you as part of a standard medical operation known as a blood transfusion. Blood lost during surgery or an accident can be replaced with the aid of this potentially life-saving technique.
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