The lymphatic system absorbs fats and other substances from the digestive tract.

The lymphoid tissues and organs house phagocytic cells and lymphocytes, which play essential roles in body defense and resistance to disease.

Lymphatic Vessels: What part is corresponding to number 1

Lymphatic Vessels : Label #2

Lymphatic Vessels : label #3

Lymphatic vessels: label #4

Lymphatic vessels : label #5

The lymphatic vessels are also called __________, form a one way system, and lymph flows only towards the heart.

The microscopic, blind-ended lymph capillaries weave between

the tissue cells and blood capillaries in the loose connective tissues of the body and

absorb the leaked fluid.

Lymph is transported from the lymph capillaries

through successively larger lymphatic vessels referred to as l____________________, until it is finally returned to the venous system through one of the two large

ducts in the thoracic region.

The large _________ receives lymph from the rest of the body; both

ducts empty the lymph into the subclavian vein on their own side of the body.

The __________ in particular help protect the body by removing foreign material such as bacteria

and tumor cells from the lymphatic stream and by producing lymphocytes that function in the

immune response

Within the lymph nodes are __________, which engulf and destroy

bacteria, viruses, and other foreign substances in the lymph before it is returned to the

blood.

Collections of ________ (a type of white blood cell) are also

strategically located in the lymph nodes and respond to foreign substances in the

lymphatic stream.

Each node is surrounded by a fibrous capsule from which strands called

________ extend inward to divide the node into a number of compartments.

The outer part of the node, the ______, contains collections of lymphocytes

called follicles, many of which have dark-staining centers called germinal centers.

These centers enlarge when specific lymphocytes (the B cells) are

generating daughter cells called ________, which release antibodies.

Phagocytic macrophages are located in the central ______ of the lymph

node

Lymph enters the convex side of a lymph node through

the ______________.

lymph then flows through a number of sinuses that cut

through the lymph node and finally exits from the node at its indented region, the hilum,

via the ____________________________.

The ___________is a soft, blood-rich organ that filters blood.

The ___________ is located on the left side of the abdominal cavity, just beneath

the diaphragm, and curls around the anterior aspect of the stomach.

The ______ are small masses of lymphoid tissue that ring the pharynx (the throat), where they are

found in the mucosa.

________ are found in the wall of the small intestine.

The body’s first line of defense against the invasion of disease-causing microorganisms is the

_____ and _____________. (Select 2)