Chapter 22 - Lymphatic System Flashcards
Chapter 22 - Lymphatic System
the lymphatic system is comprised of
lymph white blood cells lymph vessels spleen lymph nodes tonsils thymus gland
Chapter 22 - Lymphatic System
the network of the lymphatic system is found where
throughout the entire body
Chapter 22 - Lymphatic System
lymph nodes are what shape
round, oval or bean
Chapter 22 - Lymphatic System
where are lymph nodes found
along the course of the lymph vessels
Chapter 22 - Lymphatic System
what is function of lymph nodes
filter the lymph
Chapter 22 - Lymphatic System
will all lymph pass through a node
yes. at least one
Chapter 22 - Lymphatic System
the lymph vessels converge where
toward right/left subclavian vein
Chapter 22 - Lymphatic System
vessels from the right limb, right side of the head/neck enter the
right subclavian vein
Chapter 22 - Lymphatic System
vessels from the left side of the body enter the
thoracic duct
Chapter 22 - Lymphatic System
thoracic duct ends by entering the
left subclavian vein
Chapter 22 - Lymphatic System
cisterna chyli is a
holding tank that contains fluid from the lymph vessels
Chapter 22 - Lymphatic System
where does the liquid in the cisterna chyli come from
digestive tract
lower limbs
abdomen
Chapter 22 - Lymphatic System
the right lymphatic duct is smaller and shorter than the
thoracic duct
Chapter 22 - Lymphatic System
right lymphatic duct opens into
right subclavian vein
Chapter 22 - Lymphatic System
functions of the lymphatic system
fluid balance
fat absorption
defense
Chapter 22 - Lymphatic System
fluid passes from the _______ of capillaries into the _______ and back to the _______
interstitial spaces
lymph system
blood
Chapter 22 - Lymphatic System
when fluid balance isn’t working this results
edema
Chapter 22 - Lymphatic System
long-term edema results in
tissue damage
Chapter 22 - Lymphatic System
the lymphatic system absorbs fat from the
GI tract
Chapter 22 - Lymphatic System
where is fat absorbed
lacteals
Chapter 22 - Lymphatic System
where are lacteals located
lining of the GI tract
Chapter 22 - Lymphatic System
fat passes through the _______ and enters the _______
lacteals
venous system
Chapter 22 - Lymphatic System
when fat and lymph mix it is called
chyle
Chapter 22 - Lymphatic System
how does lymphatic system defend body
lymph filters microorganisms & foreign bodies
wbcs kill invading microbes
Chapter 22 - Lymphatic System
lymph organs are comprised of
lymphatic tissue
Chapter 22 - Lymphatic System
lymphatic tissue is made of
lymphocytes
macrophages
dendrites cells
reticular cells
Chapter 22 - Lymphatic System
where do lymphocytes originate
red bone marrow
Chapter 22 - Lymphatic System
where is diffuse lymphatic tissue found
deep mucous membranes
lymph nodes
spleen
Chapter 22 - Lymphatic System
_______ are dense arrangements of lymph tissue organized into compact structures
lymph nodes
Chapter 22 - Lymphatic System
where are lymph nodes found
loose connective tissue of the:
GI tract
urinary system
respiratory system
Chapter 22 - Lymphatic System
_______ are large aggregations of lymph nodes found in the distal 1/2 of the small intestine and the appendix
Peyer’s patches
Chapter 22 - Lymphatic System
_______ are large groups of lymph nodules and diffuse lymph tissue deep in the mucous membranes of the oral cavity and nasopharynx.
tonsils
Chapter 22 - Lymphatic System
what is function of tonsils
protection against bacteria and other harmful materials
Chapter 22 - Lymphatic System
how many groups of tonsils
3
Chapter 22 - Lymphatic System
what are groups of tonsils
palatine
pharyngeal
lingual
Chapter 22 - Lymphatic System
where are palatine tonsils (what we know as “tonsils”) located
either side of throat
Chapter 22 - Lymphatic System
where are the pharyngeal tonsils located
near junction of nasal cavity and pharynx
Chapter 22 - Lymphatic System
another name for pharyngeal tonsils
adenoids
Chapter 22 - Lymphatic System
where are lingual tonsils located
posterior surface of tongue
Chapter 22 - Lymphatic System
what is found inside lymph nodes
lymphocytes
Chapter 22 - Lymphatic System
how many superficial collections of lymph nodes
3
Chapter 22 - Lymphatic System
what are the lymph node collections
Inguinal
Axillary
Cervical
Chapter 22 - Lymphatic System
groups of nodes are also found where
around intestines
along large blood vessels of thorax and abdomen
Chapter 22 - Lymphatic System
lymph nodes are surrounded by a
capsule
Chapter 22 - Lymphatic System
what is lymph node capsule made of
dense connective tissue
Chapter 22 - Lymphatic System
what is skeleton of lymph node
trabecular
Chapter 22 - Lymphatic System
what else in body filters lymph
nothing
Chapter 22 - Lymphatic System
what are vessels of lymph nodes
afferent
efferent
Chapter 22 - Lymphatic System
what are lymph nodes lined with
phagocytic cells
Chapter 22 - Lymphatic System
what do phagocytic cells do
remove bacteria from lymph
Chapter 22 - Lymphatic System
primary cells of lymph nodes
lymphocytes
macrophages
reticular cells
Chapter 22 - Lymphatic System
_______ in the lymph can stimulate cell division of the lymphocytes
microbes
Chapter 22 - Lymphatic System
areas of rapid lymphocyte division are called
germinal centers
Chapter 22 - Lymphatic System
_______ is located on the left superior posterior region of the abdominal cavity
spleen
Chapter 22 - Lymphatic System
spleen is surrounded by a _______ capsule
fibrous
Chapter 22 - Lymphatic System
spleen has an internal network of
reticular fibers
Chapter 22 - Lymphatic System
spleen has _______ surfaces
2
Chapter 22 - Lymphatic System
what are the surfaces of spleen
diaphragmatic
visceral
Chapter 22 - Lymphatic System
the _______ surface of spleen is smooth and convex, conforming to the shape of the diaphragm and the body wall
diaphragmatic
Chapter 22 - Lymphatic System
the _______ surface of the spleen contains indentations of the shape of the stomach and kidney
visceral
Chapter 22 - Lymphatic System
how many types of lymph in spleen
2
Chapter 22 - Lymphatic System
what are types of lymph in spleen
red pulp
white pulp
Chapter 22 - Lymphatic System
red pulp is associated with
red blood cells
Chapter 22 - Lymphatic System
white pulp is associated with
lymphocytes
Chapter 22 - Lymphatic System
blood vessels and lymph vessels in spleen communicate with the spleen on the _______ surface
visceral
Chapter 22 - Lymphatic System
where do the splenic vessels communicate
hilus
Chapter 22 - Lymphatic System
_______ is the groove marking the border between the gastric and renal areas
hilus
Chapter 22 - Lymphatic System
what is attached to the hilus
splenic vein
splenic artery
lymphatic vessels
Chapter 22 - Lymphatic System
function of spleen
detect and respond to foreign substances in blood
destroy old RBCs
serve as blood resevoir
Chapter 22 - Lymphatic System
blood enters spleen and passes through
white pulp
Chapter 22 - Lymphatic System
what happens in white pulp in spleen
lymphocytes can be stimulated in response to microbes
Chapter 22 - Lymphatic System
as blood leaves spleen it passes through
red pulp
Chapter 22 - Lymphatic System
what happens in red pulp in spleen
macrophages can be activated to clean up the blood
Chapter 22 - Lymphatic System
_______ is a triangular double lobed gland
thymus
Chapter 22 - Lymphatic System
where is thymus located
superior mediastinum behind the manubrium of the sternum
Chapter 22 - Lymphatic System
when is the thymus the largest
1-2 yrs old
Chapter 22 - Lymphatic System
what happens to thymus as we age
shrinks
Chapter 22 - Lymphatic System
thymus is surrounded by
thin capsule
Chapter 22 - Lymphatic System
what extends off the capsule surrounding the thymus
trabeculae
Chapter 22 - Lymphatic System
what is concentrated near the capsule of the thymus
lymphocytes
Chapter 22 - Lymphatic System
where in the thymus are there no lymphocytes
medulla
Chapter 22 - Lymphatic System
what is contained in the medulla of the thymus
Hassall’s corpuscles
Chapter 22 - Lymphatic System
what is the function of Hassall’s corpuscles
unknown
Chapter 22 - Lymphatic System
what is immunity
ability to resist damage from a foreign substance
Chapter 22 - Lymphatic System
_______ is the immunity you are born with
innate
Chapter 22 - Lymphatic System
innate immunity is the _______ immunity
natural
Chapter 22 - Lymphatic System
_______ is the natural resistance to foreign substances entering the orgnaism
mechanical immunity
Chapter 22 - Lymphatic System
what is our first line of defense
skin and mucous membranes
Chapter 22 - Lymphatic System
_______ are molecules that are involved in the development of immunity
chemical mediators
