Lymphatic Pathways
True or False, the lymphatic system is a one way system.?
True
What is the fluid in the lymphatic pathways called?
Lymph
Name two body regions where major chains of lymph nodes can be found.
Possible answers include:
Cervical region
Axillary region
Supratrochlear region
Inguinal region
Pelvic region
Abdominal region
Thoracic region
There are two types of immunity, active and passive. True or false
True
With age, lymphatic contractility
Declines
These are tiny, thin-walled vessels that collect fluid from tissues and return it to the bloodstream:
Lymphatic Capillaries
Damage to the lymphatic system can cause swelling, known as ________?
Edema
What are the three major lymphatic organs?
Lymph nodes, thymus, and spleen
What two cells are key components in the adaptive immune system?
B cells and T cells
What happens to lymph movement in lymphatic vessels with age?
slower movement and sometimes back-flow
Which duct receives lymph from the lower body regions, left upper limb, and the left side of the head and neck?
The thoracic duct
Tissue fluid is very similar to plasma, except that it does not contain what?
Plasma proteins
The thymus is located posteriorly to what?
The superior portion of the body of the sternum
What are the innate defenses?
species resistance, mechanical barriers, inflammation, chemical barriers, natural killer cells, fevers
Main cause of lymphatic decline?
DNA degeneration
Where does lymph enter the bloodstream?
The Subclavian vein
What color is lymph?
Clear, pale and yellow
The lymphatic system filters debris and foreign particles from lymph, but what happens to the particles and foreign particles after they have been removed from the lymph?
They are engulfed, destroyed, and removed by lymphocytes and macrophages.
What causes redness during inflammation?
Blood vessel dilation
Chemical production is decreased because of:
decreased hormones and element flow to cells
In an average adult, the volume of fluid in the lymphatic system is almost _______ the amount of fluid in the blood circulation system.
Double
Lymph is composed of water, electrolytes, nutrients, white blood cells, and cellular debris. What else might it contain?
Fats
The average adult will have approximately how many lymph nodes?
Approximately 800 (according to pubmed)
What vitamin aids in immune support?
Vitamin C
Because of atrophy, lymph nodes can lose their ability to -
house immune cells