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
Goryan [66]
3 years ago
9

Match each of the four barriers of innate immunity with its mode of action.

Biology
1 answer:
serg [7]3 years ago
3 0

The matches are

A. anatomical barrier   is matched with 1. secretion of sweat, saliva,  and tears.

The epithelium is a physical barrier constituting one of the first defenses against infectious agents. The desquamation of the epidermis thus eliminates bacteria or other infectious agents that have adhered to the surface of the epithelium. In the digestive tract and the respiratory tract, the movement operated by the peristalsis or the eyelashes contribute to the elimination of the infectious agents. The intestinal flora prevents colonization by pathogenic bacteria acting in particular by competition for nutrients. Tears and saliva also help prevent infection of the eyes and mouth, respectively.


B. physiological barrier   is matched with 4. changes in pH and  temperature.

In addition to this physical (or anatomical) barrier, the acidic pH and low moisture content of the stratum corneum, and the skin temperature below 37 ° C, are detrimental to bacterial growth. Finally, the presence of antimicrobial peptides and lipids make the epidermis a true defender against infection.


C. phagocytic barrier  is matched with 3. signaling to macrophages.

Macrophages are cells belonging to white blood cells (leucocytes), which infiltrate tissues. They come from the differentiation of circulating blood leukocytes, monocytes. Monocytes and macrophages are phagocytes and are therefore capable of phagocytosis.

They participate in innate immunity as a non-specific defense, but are able to participate in adaptive immunity via opsonization.


D. inflammatory barrier  is matched with 2. secretion of chemicals.

In an inflammatory reaction, blood flow increases at the lesion area. The blood vessels become more permeable thanks to vasodilator chemical substances, which allows the migration of cells from the blood to the tissues (the call is made using chemokines). The first cells arriving at the site of inflammation are often neutrophils, then macrophages arrive and then lymphocytes if there is immune stimulation.



You might be interested in
What would happen if a person with sickle cell anemia received regular medical treatment
lyudmila [28]

Answer:

the procedure aims to replace the stem cells in the bone marrow the source of new red blood cells with healthy stem cells from a matching donor

7 0
2 years ago
The failure of sister chromatids to separate properly during cell division
Vinvika [58]

Answer:

huh? wait..what?

Explanation:

6 0
2 years ago
The cell cycle is highly regulated and involves many steps to ensure that a cell is ready to divide. For this reason, cells cycl
castortr0y [4]

Answer:

The two major phases of the cell cycle include mitosis (cell division), and interphase, when the cell grows and performs all of its normal functions. Interphase is further subdivided into G1, S, and G2 phases. After the synthesis phase, the cell proceeds through the G2 phase.

Explanation:

4 0
2 years ago
Read 2 more answers
Overfishing is a global problem in which humans harvest certain species of fish, almost to the point of extinction. Many of the
schepotkina [342]

Answer: i think it’s C

Explanation: i’m taking the test rn and that’s what i’m gonna put, it’s the best answer

3 0
2 years ago
Muscles in animals are often found in pairs, because A muscles can produce a force as they relax B muscles can only pull C muscl
Elanso [62]
<span>B muscles can only pull 
</span><span>
A type of a balanced stretch involves targeting a specific muscle group. When stretching, a person should be aware of the agonist and antagonist muscles being stretched in able to create a balance between the joints where the muscles are attached. Stretching is an important phase in the exercise cycle and should not be missed as this prevents injuries in the joints and increases the blood flow into the muscles that were used during the activity. Stretching also contributes to lessening the lactic acid build up that happens during physical activity.</span>
6 0
3 years ago
Other questions:
  • Which shows the correct order of processes the body undergoes to maintain blood glucose levels?
    13·1 answer
  • What does it mean to be unicellular
    5·1 answer
  • SOMEONE PLEASE HELP ME :(
    9·2 answers
  • The endosperm of a Conifer seed is:
    14·1 answer
  • Water can act as either a(n) _____ or a _____. acid, base solute, solvent anion, cation salt, mixture
    15·1 answer
  • What is the definition of mutualism
    10·2 answers
  • Strolling in the Sonoran Desert, you come upon a stately Saguaro cactus. The large central "trunks" of this cactus are covered w
    14·1 answer
  • What part of the bacterial cell is most involved in gram staining and why?
    11·1 answer
  • I have science homework pls help its due at 11:59
    9·1 answer
  • What percentage of the human genetic code influences visible characteristics associated with race?.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!