1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vazorg [7]
2 years ago
10

How does an antihistamine reduce allergy symptoms? How does an antihistamine reduce allergy symptoms? a. An antihistamine binds

pollen antigens, preventing them from provoking an allergic reaction. b. An antihistamine blocks receptors for inflammatory chemicals released from granules within mast cells. c. An antihistamine kills mast cells, blocking an allergic reaction.
Biology
1 answer:
sattari [20]2 years ago
8 0

Answer:

b. An antihistamine blocks receptors for inflammatory chemicals released from granules within mast cells.

Explanation:

The mast cells situated at the body surfaces are responsible for alerting the immune system when a local infection is detected. This induces the secretion of inflammatory chemicals from granules within the mast cells once activated. Histamine is released which causes the blood vessels to expand and the skin to swell, thereby protecting the body. This leads to the production of symptoms like sneezing and rashes.

This allergic response to the perceived antigen is initiated as a result of the degranulation of the mast cell.

An antihistamine helps in stopping the histamine from affecting the cells in the body by blocking the receptors for the inflammatory chemicals released from granules within mast cells

You might be interested in
Which of the following causes ozone depletion?
DedPeter [7]

Answer:

B. foaming agents or plastics releasing chloroflourocarbons

Explanation:

Causes : chlorofluorocarbon (CFCs), halons, and other compounds deplete the ozone layer. These chemicals are found in cleaning agents, aerosols, insulating foam, and refrigerants. CFCs and halons break down into chlorine and bromine which in turn destroy the ozone layer.

3 0
2 years ago
Read 2 more answers
Which most directly describes a benefit of using DNA technology in medicine?
Ainat [17]

Answer:

The CORRECT answer is A) Medicine can be produced in mass quantities.

Explanation:

Right on edge :)

**please mark brainliest!!

6 0
3 years ago
Read 2 more answers
Hypothesis: If i add the egg to vinegar then the shell will dissolve within 24 hours
nadezda [96]

Answer :

Vinegar is a weak acid. This is used to make a naked egg. When an egg is added in the vinegar for one day / 24 hrs, it reacts with the eggshell.  The calcium carbonate shell gets dissolve.

Then an egg without shell is formed and the size of the egg does not change. The calcium carbonate reacts with acetic acid and forms carbon dioxide.

When the shell-less egg is kept in the vinegar for 48 hrs i.e. 2 days again, the water content in it enters into the eggs through the membrane. Then the egg gets somewhat bigger.

Otherwise, for 24 hrs, vinegar is acting like an isotonic solution and only dissolves the shell. This experiment would be done for showing the osmosis process through the cell membrane.

6 0
3 years ago
Which of these is not a basic need of all organisms?
GREYUIT [131]
Soil.

food, water, and an appropriate environment are crucial to all organisms.
3 0
3 years ago
Which blood component makes up 41% of the blood’s volume?
alexira [117]
Red cells take up 40%-50% of the total blood volume
6 0
3 years ago
Read 2 more answers
Other questions:
  • The sides of the DNA molecule, the rails of the ladder, are composed of what
    14·1 answer
  • Compare lactic-acid fermentation and alcohol fermentation.​
    7·1 answer
  • What are three requirements associated with leaves as photosynthetic organs?
    10·1 answer
  • What are the similarities between <br><br>1. the linneous and modern classification system?
    11·1 answer
  • In rabbits, black fur is dominant over gray fur. What percentage of offspring will be gray if a heterozygous male and homozygous
    13·1 answer
  • Surface currents are caused by what and curves by what​
    13·1 answer
  • Which situation is an example of competition that could be found in the ocean?
    14·1 answer
  • When these clouds break apart, they let out buckets of rain or snow
    12·2 answers
  • Which is true of plant cells and not animal cells?
    5·1 answer
  • Why is it that nitrogen is often a limiting plant nutrient, despite the fact that the atmosphere is 80% nitrogen gas (N2)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!