What is a natural killer cell?
A large lymphocyte that destroys bacteria, microbes and foreign cells (ex. as from organ transplants causing rejection)
The "T" in T-lymphocyte stands for...
T-cells mature in...
B-cells mature in...
What type of cell is a Macrophage is ________, which means it engulfs and breaks down foreign objects.
A dendritic cell is found in the _______ and _______ membranes and gets rid of _______.
Reticular cells are found in...
What are the two types of lymphatic tissue?
- Diffuse lymphatic tissue
- Lymphatic nodules
Does diffuse lymphatic tissue have a high or low concentration of lymphocytes?
Where is Diffuse lymphatic tissue found?
Where there is access to the external.
Tonsils, respiratory tract, digestive tract
The most common type of diffuse lymphatic tissue is known as _____, which stands for...
Mucus Associated Lymphatic Tissue
Do lymphatic nodules have a high or low concentration of lymphocytes?
Lymphatic nodules form when...
In the small intestine, lymphatic nodules are also known as
Peyer Patches are looking for...
microbes in your food supply
Where are some places lymphatic nodules are found?
appendix, small intestine, urinary tract
What are the two types of lymphatic organs?
What is the definition of a primary lymphatic organ?
They are the sites of maturation of Lyphocytes
In what two places do lympocytes mature?
- Red bone marrow
Red bone marrow has _______ cells that can become whtie or red blood cells.
Homopoietic stem cells
The thymus secretes a chemical called _______ that promotes the development and activity of T-cells
What is the definition of secondary lymphatic organs?
Organs that mature lymphocytes migrate to where they can find their specific antigen.
Give 3 examples of secondary lymphatic organs
- lymph nodes
The spleen is the largest _______ and filters _______.
secondary lymphatic organ
The spleen has __ regions called...
white pulp and red pulp
In the white pulp of the spleen, lymphocytes are...
waiting to find their antigens
What occurs within the red pulp of the spleen?