Quick Answer: What Are The Two Branches Of The Human Immune System Quizlet?

What is the difference between active and passive immunity?

A prominent difference between active and passive immunity is that active immunity is developed due to the production of antibodies in one’s own body, while passive immunity is developed by antibodies that are produced outside and then introduced into the body..

What are the two main arms of the immune system?

In vertebrates, the immune system consists of two arms, a non-specific, innate arm and a more specific, acquired arm (Male and Roitt, 2000; Doan et al., 2005). The innate immune system provides initial protection to a wide variety of foreign organisms.

What are the two branches of the human immune system?

There are two branches of the immune system: innate (or natural) immunity and adaptive (or acquired) immunity.

What are the 2 types of immune system cells?

Lymphocytes are immune cells found in the blood and lymph tissue. T and B lymphocytes are the two main types. Macrophages are large white blood cells that reside in tissues that specialize in engulfing and digesting cellular debris, pathogens and other foreign substances in the body.

What are the 2 types of acquired immunity?

Immunity that develops during a person’s lifetime. There are two types of acquired immunity: active immunity and passive immunity.

What are examples of passive immunity?

Passive immunity can occur naturally, such as when an infant receives a mother’s antibodies through the placenta or breast milk, or artificially, such as when a person receives antibodies in the form of an injection (gamma globulin injection).

What are signs of a weak immune system?

6 Signs You Have a Weakened Immune SystemYour Stress Level is Sky-High. … You Always Have a Cold. … You Have Lots of Tummy Troubles. … Your Wounds Are Slow to Heal. … You Have Frequent Infections. … You Feel Tired All the Time. … Ways to Boost Your Immune System.

What causes your immune system to attack your body?

When the body senses danger from a virus or infection, the immune system kicks into gear and attacks it. This is called an immune response. Sometimes, healthy cells and tissues are caught up in this response, resulting in autoimmune disease.

What are the 5 parts of the immune system?

The main parts of the immune system are: white blood cells, antibodies, the complement system, the lymphatic system, the spleen, the thymus, and the bone marrow. These are the parts of your immune system that actively fight infection.

What are the three branches of the immune system?

Humans have three types of immunity — innate, adaptive, and passive: Innate immunity: Everyone is born with innate (or natural) immunity, a type of general protection. For example, the skin acts as a barrier to block germs from entering the body.

Which cells activate both branches of the immune system?

T lymphocytes The “T” in their name comes from “thymus.” T cells have three main jobs: They use chemical messengers to activate other immune system cells in order to start the adaptive immune system (T helper cells). They detect cells infected by viruses or tumorous cells and destroy them (cytotoxic T cells).

Why does the body have both antibody and cell mediated immune responses?

Both humoral and cell mediated responses are essential for antiviral defense. The contribution of each varies, depending on the virus and the host. Antibodies generally bind to virus particles in the blood and at mucosal surfaces, thereby blocking the spread of infection.

What are the 4 types of immunity?

Terms in this set (4)Active immunity. Immunity derived from antibodies generated by own body. … Passive immunity. Immunity derived from antibodies from another body, such as given through mother’s milk or artificial means (antivenom antibodies). … Natural immunity. … Artificial immunity.

What is the strongest immune cell?

Immune cascade Two types of white blood cells — B and T cells — are incredibly powerful tools in the immune system’s arsenal.