Answer: The infuenza Virus mutates often so a new vaccine will be needed to fight the stronger, more adapted version of the virus.
Answer:
The answer is B. 500
Explanation:
During normal silent breathing, approximately 500 ml of air enters and leaves the lungs at each breath. Remember that the air that enters the lungs, under normal conditions is an involuntary action that the body carries out without the person noticing. An alteration of this, produces a condition of dyspnea, sensation that the patient perceives of drowning.
Answer:
Physical and Chemical Barriers (Innate Immunity) Physical and chemical barriers form the first line of defense when the body is invaded. Physical Barriers. The skin has thick layer of dead cells in the epidermis which provides a physical barrier. Periodic shedding of the epidermis removes microbes.
Explanation
Physical and chemical barriers form the first line of defense when the body is invaded. The skin has thick layer of dead cells in the epidermis which provides a physical barrier. Periodic shedding of the epidermis removes microbes. The mucous membranes produce mucus that trap microbes.
The development of a tolerance to one drug that reduces the effects of another similar drug is known as Cross- Tolerance.
<h3>What is meant by Drug Tolerance?</h3>
A pharmacological notion known as drug tolerance or drug insensitivity describes people' diminished response to a substance after repeated use. The effects of the medicine may be amplified again by increasing the dosage, although this may hasten tolerance development and further blunt the drug's effects.
Drug tolerance is a sign of drug use but is not always a sign of drug addiction or dependence. It is possible to reverse the development of tolerance by taking a drug holiday, and both physiological and psychological reasons may be involved.
Drug tolerance to side effects is another possibility, in which case tolerance is a desirable quality. A medical procedure termed allergen immunotherapy, in which a patient is exposed to increasing doses of an allergen to lessen allergic responses, has the goal of increasing tolerance.
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