Lymphocytes

Lymph nodes contain large numbers of white blood cells called ____ and macrophages, that fight invading microorganisms.

The indented region where blood vessels and nerves join a lymph node is called?

______ that contains germinal centers are the structural units of a lymph node.

THe spaces within a lymph node are called ____ through which lymph circulates.

Lymph enters a node through a(an)__________ lymphatic vessel.

The partially encapsulated lymph nodes in the pharynx are called?

The aggregations of lymph nodules found within the mucosal lining of the small intestine are called ______?

The Lymph nodes in the cervical region are associated with the lymphatic vessels that drain the __________?

The lymph nodes associated with the lymphatic vessels that drain the lower limbs are located in the  ______ region.

The thymus is loacted in the ____ anterior to the aortic arch.

The thymus reaches its greates size during infancy and early childhood and tends to decrease in size following _______?

As a person ages the thymus tissue is often replaced by _________?

The lymphocytes of the thymus develop fromt eh precursor cells that originated in the _______?

The hormone secreted by the thymus are called?

The ____ is the largest of the lymphatic organs.

Blood vessels enter the spleen through the region called the _______?

The sinuses within the spleen contain _______?

The tiny islands (nodules) of the tissue within the  spleen that contain many lymphocytes constitutes the  ______ pulp.

The ____ pulp of the spleen contains large numbers of red blood cells, lymphocytes, and macrophages

_____ within the spleen engulf and destroy foreign particles and cellular debris.

Lymphatic pathways begin as ______ that merge to form lymphatic vessels.

The wall of the lymphatic capillary consists of a single layer of ______ cells.

Once tissue (interstitial) fluid is inside a lymphatic capillary, the fluid is called?

Lymphatic vessels have walls similar to those of _____ but thinner.

Lymphatic vessels contain ____ that will help prevent the backflow of lymph.

Lymphatic vessels usually lead to the lymph _____  That filter the fluid being transported.

The lymphatic trunk that drains the head and her neck is called _______ trunk.

The lymphatic trunk that drains the abdominal visceral is called the  ______ trunk.

The __________ is the larger and longer of the two lymphatic collecting ducts.