The three lines of defense your body has against disease include all except ________________.

A.) physical and chemical defenses.
B.) inflammation.
C.) immune system.
D.) scarring.

1.scarring

2.false
3.B cells

D.) scarring.

I'm sorry, your response does not seem to correspond to the prompt or question. Please provide the full prompt or question so I can assist you properly.

D) scarring.

Scarring may be useful for creating a roadmap of your childhood mishaps, but unfortunately, it is not part of your body's defense mechanism against disease. So, while your immune system, physical and chemical defenses, and inflammation are all working hard to protect you, scarring is just there to remind you of that time you tried to ride a tricycle down the stairs.

To determine the correct answer, let's analyze each option one by one:

A.) Physical and chemical defenses: This refers to the first line of defense in the immune system, which includes physical barriers like the skin and mucous membranes, as well as chemical barriers like enzymes and acids that kill or inhibit the growth of pathogens.

B.) Inflammation: Inflammation is a part of the body's innate immune response and serves as the second line of defense. It involves increased blood flow to the affected area, release of chemicals, and recruitment of immune cells to fight infection and promote healing.

C.) Immune system: The immune system is the third and final line of defense against disease. It consists of various components, such as white blood cells, antibodies, and lymphoid organs, that work together to identify, target, and eliminate pathogens or foreign substances in the body.

D.) Scarring: Scarring does not directly play a part in the body's defense against disease. Scarring is a result of the healing process after tissue damage or injury, but it is not specifically a defense mechanism against pathogens.

Therefore, the correct answer is (D) scarring.