Chap 14: Lympathic System Flashcards
Once inside the lymphatic capillaries, this fluid is called what?
Lymph (LIMF)
What are the substances in plasma
- Ions
- Nutrients
- Gases
- Some proteins
The lymphatic system absorbs lipids and other substances from the digestive tract. through lymphatic vessels called __________ located in the lining of the small intestine.
Lacteals
The lymph passing through the lymphatic vessels appears white because of the lipid content and is called what?
Chyle
The Lymphatic system includes..
- Lymph
- Lymphatic vessels
- Lymph Nodes
- Tonsils
- Spleen
- Thymus
Carries fluid in one direction, from tissues to the
circulatory system.
Lymphatic Capillaries
The ___________________ are tiny,
closed-ended vessels consisting of simple
squamous epithelium
Lymphatic Capillaries
This is similar to blood capillaries, Lymphatic capillaries
join to form larger Lymphatic vessels, which resemble small veins.
Lymphatic vessels
Small __________________ have a beaded appearance because they have one-way valves that are similar to the valves of veins.
Lymphatic vessels
Where lymphatic vessels from the right upper limb and right head, neck, and chest.
Right lymphatic duct
Empties into right subclavian vein
Right lymphatic duct
Where the rest of the body empties from lymphatic vessels
Thoracic duct
It empties into left subclavian vein
Thoracic duct
Collection of lymphoid tissue; usually refers to large
collections of lymphoid tissue beneath mucous membranes of the oral cavity and pharynx; lingual, pharyngeal, and palatine tonsils.
Tonsils
Located on each side of the posterior opening of the oral cavity.
The paired palatine tonsils
These are the ones usually referred to as “the tonsils”
The paired palatine tonsils
Located near the internal opening of the nasal cavity
The pharyngeal tonsils
These are on the posterior surface of the tongue
The lingual tonsils
These form a protective ring of lymphatic tissue around the openings between the nasal and the oral cavities and the pharynx.
Tonsils
The removal of the palatine tonsil is called what?
Tonsillectomy
The removal of the pharyngeal tonsils is called
Adenoidectomy
production of lymphocytes
Lymph nodes
These are distributed along the various
lymphatic vessels, and most lymph passes through at least one lymph node before entering the blood.
Lymph nodes
The collection of lymphocytes
Follicles
Location of the macrophage
Central medulla
It is where efferent lymphatic vessels and blood vessels are found
Hillum
Port of ENTRY
Afferent Lymphatic
vessels
Port of EXIT
Efferent Lymphatic vessels
It is roughly the size of a clenched fist and is located in the left, superior corner of the abdominal cavity.
Spleen
It regulates blood volume
Spleen
It is the lymphatic tissue surrounding the
arteries within the spleen
White Pulp
It consists of a fibrous network, filled
with macrophages and red blood cells, and enlarged capillaries that connect to the veins.
Red Pulp
Each lobe of the thymus is surrounded by a thin connective tissue ________.
Capsule
____________ from the capsule divide each lobe into lobules.
Trabeculae
Macrophages in the red pulp remove foreign
substances and worn-out red blood cells through
what?
phagocytosis
The removal of the spleen, may be
necessary if these techniques do not stop the bleeding.
Splenectomy
Bilobed gland roughly triangular in shape.
Thymus
Found in the walls of small intestine
Peyer’s Patches
It prevents penetration of pathogens in the intestinal
wall
Peyer’s Patches
It empties lymph into the junction of jugular and subclavian veins of the cardiovascular system
Lymphatic ducts
It passes lymph to lymphatic ducts
Lymphatic vessels
It carries lymph from lymph nodes
Efferent lymphatic vessels
It carries lymph from blood capillaries to lymph nodes.
Afferent lymphatic vessels
It filters lymph and remove foreign substances through filtering, phagocytosis, and immune reactions
Lymph nodes
produces and matures lymphocytes
The Thymus Gland
a dense connective tissue surrounding the lymph node
Capsule
The lymphatic tissue consist of
lymphocytes and other cells that can
form dense
Lymphatic Nodules
spaces between the lymphatic tissue that contain macrophages on a network of fibers
Lymphatic Sinuses
Dark staining center of follicles
Germinal Centers
Outer part of the node
Cortex
Lighter-staining
Medullary Sinus
contain both types of lymphocytes
Medullary Cord
