Lab 5: Lymphatic System Flashcards
_____ are small blunt ended vessels responsible for collecting interstitial fluid and delivering it to the lymphatic vessels.
lymphatic capillaries
_____ is interstitial fluid that has entered the lymphatic capillaries.
lymph
_____ is a special type of lymphatic capillary found in the small intestines which help to absorb fat and then transport it to the blood steam.
lacteal (tiny lymphatic vessel)
Lymphatic capillaries merge to form lymph collecting vessels which merge to form larger vessels called ______.
lymph trunks
Lymph trunks transport lymph to one of the two _____.
lymphatic ducts.
The two lymphatic ducts are the ____ and the ____ duct.
right lymphatic duct
thoracic duct
_____ return the lymph to the blood stream by way of the subclavian veins.
lymphatic ducts
_____ collects lymph from the right side of the body above the diaphragm.
right lymphatic duct
______ collects lymph from the entire left side of the body and below the diaphragm on the right side of the body.
thoracic duct
_____ is a dilated sac at the lower end of the thoracic duct where all of the lower body lymphatic trunks merge.
Cisterna chyli
_____ are encapsulated lymphoid organs found along the lymph vessels that filter lymph by removing pathogens, toxins, viruses, and cancer cells.
lymph nodes
Lymph nodes are clustered in the _____, _____, and ____ regions of the body.
cervical
axillary
inguinal
Lymph nodes are composed of a ____ and ____
cortex and medulla
Lymphatic nodules are found in the _____ and contain germinal centers.
cortex
Germinal centers contain proliferating B-cells and ____.
macrophages.
_____ are un-encapsulated lymph nodules found behind the nasal and oral cavities.
tonsils
The three types of tonsils.
Pharyngeal
Palatine
Lingual
Pharyngeal tonsils or ____ are found in the posterior nasopharynx.
adenoids
_____ tonsils is found in the posterior oropharynx.
palatine
_____ tonsils are at the base of tongue.
Lingual
MALT stands for
mucosal-associated lymphatic tissue
_____ is un-encapsulated clusters of lymphatic nodules found throughout the bodies mucous membranes.
MALT
MALT is located in the ____ of the mucosa.
lamina propria
MALT is located in the ______, _____, ____, and ____ tracts.
gastrointestinal respiratory (tonsils_ urinary reproductive i.e. appendix
The lymphatic cells in the MALT help defend against foreign substances that come in contact with ______.
mucosal membranes
MALT is very prominent in the mucosa of the small intestine, primarily in the ileium. There, collections of lymphatic nodules called ____ can become quite large.
Peyer patches
_____ is found in the mediastinum, anterior to the aortic arch and posterior to the sternum.
Thymus
The thymus is where _____ go to mature into _____.
immature lymphocytes
T cells
The thymus starts off ____ as an infant then ____ with age.
large
shrinks
Elderly people do not have a ___ as it is replaced with adipose and other connective tissues.
thymus
_____ is the largest lymphatic organ.
spleen
The ____ is found in the left upper quadrant inferior to the diaphragm and lateral/posterior tot he stomach.
spleen
The spleen functions much like a ____; rids the blood (instead of lymph) of pathogens.
lymph node
The spleen removes old ____ from circulation.
old red blood cells
The spleen contains _____ an d____.
red pulp and white pulp
Red pulp contains erythrocytes, platelets, _____ and ______.
macrophages
B-cells
White pulp contains ___, ___, and macrophages.
T-cells
B-cells
