ANATOMY

GENERAL ANATOMY

IMMUNE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
White blood cells, (macrophages) are an important part of the human immune response. Two types of white blood cells, neutrophils and macrophages, act as phagocytes. Phagocytes perform which of the following functions in the human body?
A
They produce antibodies.
B
They bind to antigens and develop into plasma cells
C
They form a barrier against pathogens.
D
They engulf and destroy bacteria
Explanation: 

Detailed explanation-1: -White blood cell formation occurs in the soft tissue inside of your bones (bone marrow). Two types of white blood cells (lymphocytes) grow in the thymus gland (T cells) and lymph nodes and spleen (B cells).

Detailed explanation-2: -1 Introduction. Phagocytic cells of the immune system consist predominantly of macrophages and neutrophils. These cells represent the major cellular effectors of nonspecific host defense and inflammation.

Detailed explanation-3: -Unlike the innate immune system, the adaptive immune system relies on fewer types of cells to carry out its tasks: B cells and T cells. Both B cells and T cells are lymphocytes that are derived from specific types of stem cells, called multipotent hematopoietic stem cells, in the bone marrow.

Detailed explanation-4: -In humans, and in vertebrates generally, the most-effective phagocytic cells are two kinds of white blood cells: the macrophages (large phagocytic cells) and the neutrophils (a type of granulocyte).

There is 1 question to complete.