Lymphatic pathways begin as ____ that merge to join a lymph node is called the ____. -
form lymphatic vessels. - ANSWER -lymphatic ANSWER -hilum
capillaries
____ that contain germinal centers the structural units
The wall of a lymphatic capillary consists of a single of a lymph node. - ANSWER -Lymph nodules
layer of ____. - ANSWER -squamous epithelial
The spaces within a lymph node are called ____
Once tissue (interstitial) fluid is inside a lymphatic through which lymph circulates. - ANSWER -
capillary, the fluid is called ____. - ANSWER - lymphsinuses
lymph
Lymph enters a node through an ____ lymphatic
Lymphatic vessels have walls similar to those of vessel. - ANSWER -afferent
____ but thinner. - ANSWER -veins
The partially encapsulated lymph nodes in the
Lymphatic vessels contain ____ that help prevent the pharynx are called ____. - ANSWER -tonsils
backflow of lymph. - ANSWER -semilunar
valves
The aggregations of lymph nodules found within the
mucosal lining of the small intestine are called ____. -
Lymphatic vessels usually lead to lymph ____ that ANSWER -Peyer's patches
filter the fluid being transported. - ANSWER -
nodes
The lymph nodes in the cervical region are
associated with the lymphatic vessels that drain the
The lymphatic trunk that drains the abdominal ____. - ANSWER -skin, face, nasal cavity, and
viscera is called the ____ trunk. - ANSWER - pharynx
intestinal
The lymph nodes associated with the lymphatic
The lymphatic trunk that drains the head and neck is vessels that drain the lower limbs are located in the
called the ____ trunk. - ANSWER -jugular ____ region. - ANSWER -inguinal
The ____ is the larger and longer of the two The thymus is located in the ____, anterior to the
lymphatic collecting ducts. - ANSWER -thoracic aortic arch. - ANSWER -mediastinum
duct
The thymus reaches its greatest size during infancy
Lymph nodes contain large numbers of white blood and early childhood and tens to decrease in size
cells called ____ and macrophages that fight following ____. - ANSWER -puberty
invading microorganisms. - ANSWER -
lymphocytes
As a person ages, the thymus tissue is often replaced
by ____. - ANSWER -adipose and connective
The intended region where blood vessels and nerves tissues
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