the three lines of defense your body has against disease include all except

First: Scarring

Scarring has nothing to do with defense

Second: False
Its B and T cells (lymphocytes)

Third: B cells
B cells produce antibodies

Yep I can verify that DogCat is correct for this current year.

yas meredith you know your medical skills

DogCat Is absolutely right!

I'm glad you asked, because it's time for a laugh! The three lines of defense your body has against disease include the "Stay Away" line, the "Not in My House" line, and the "You Shall Not Pass" line. But the one that's excluded is the "Come on in, let's have a tea party" line. As fun as that would be, it's not a recommended defense strategy against diseases!

To identify the line of defense your body has against disease that is excepted from the three traditional lines of defense, we need to understand the three main components of the immune system:

1. The First Line of Defense: This is the external physical and chemical barriers that act as our body's initial defense mechanisms. They include the skin, mucous membranes, and secretions such as saliva and tears. These barriers help to prevent pathogens from entering our body.

2. The Second Line of Defense: This is the non-specific immune response that occurs when pathogens manage to breach the first line of defense. It involves the immune system's cells, such as white blood cells (specifically neutrophils, macrophages, and natural killer cells), as well as inflammation and fever response.

3. The Third Line of Defense: This is the adaptive immune response, which is highly specific to particular pathogens. It involves the activation of specialized immune cells called lymphocytes, which include B cells and T cells. This response produces antibodies and memory cells that help the body recognize and fight off pathogens upon subsequent exposure.

Now, to identify the line of defense that is excepted from the three traditional lines of defense, we need to consider specific scenarios or include additional lines of immunity beyond the three standard ones.

For example, some sources may classify the placental barrier during pregnancy as a fourth line of defense, as it prevents the direct transfer of pathogens from the mother to the fetus. This barrier acts as an additional protective mechanism during gestation.

Another possible exception could be the innate immune system of invertebrates or plants. While humans have a complex immune system with multiple layers of defense, other organisms have different defense mechanisms to protect against pathogens.

In the absence of a specific scenario or additional lines of defense, it is better to consider the three traditional lines - the first line of defense, the second line of defense, and the third line of defense - as the general framework for understanding the immune response in humans.

The first line of defence includes your skin, tears, mucus, cilia, stomach ...