Lab 4 (Chapter 21) Flashcards
What lymph node is located in the armpit?
Axillary
What lymph node is located in the area between the upper thigh and groin?
Inguinal nodes
What lymph node is located in the neck?
Cervical node
What node is located below the sides of the jaw?
Submandibular node
What organ is tucked right behind the kidney?
Spleen
What is located right below the right axillary lymph nodes?
Right lymphatic duct
What could be described as a medial white line that runs down the abdomen?
Thoracic duct
What is the bump on the thoracic duct called?
Cisterna chyli
What is the small worm-looking organ located near the lower right portion of the abdomen?
Appendix
Collecting vessels are what color on most models? What about lymph nodes?
Collecting vessels are usually white, and lymph nodes are typically green or yellow
What are the 4 major functions of the lymphatic system?
1) Drains off excess interstitial fluid, “cleans” it with the lymph nodes, and returns it to blood
2) Returns any leaked plasma proteins back to blood
3) Transports dietary fats
4) Immune responses
Lymph is chemically identical to what type of fluid?
Interstitial fluid (aka tissue fluid)
True or false: there is a one-way flow of lymph until the lymph is returned to the blood
True
What is the order of lymph through the lymphatic system?
1) Lymphatic capillaries
2) Lymphatic collecting vessels
3) Lymphatic trunks
4) Right lymphatic duct OR the thoracic duct
5) Right subclavian vein OR left subclavian vein
The lymphatic trunks originate from what two ducts?
1) Right lymphatic duct
2) Thoracic duct
What does the right lymphatic duct drain?
Drains the upper right side of the body (right head, right neck, right thorax, right arm)
What blood vessel does the right lymphatic duct drain into?
Right subclavian vein
What blood vessel does the thoracic duct drain into?
Left subclavian vein
What does the thoracic duct drain?
The rest of the body (upper left portion of body, abdomen, both legs)
The beginning of the thoracic duct starts where?
In the abdomen
Describe the cisterna chyli
It’s the beginning of the thoracic duct, and is an enlarged sac that several trunks empty into
What is the beginning of the thoracic duct called?
Cisterna chyli
The lymphatic vessels are most similar to what type of blood vessel? Why?
Veins, because they both have:
1) Unidirectional valves
2) Thin walls
What are the two primary lymphoid organs?
1) Red bone marrow
2) Thymus gland
Describe the location of the thymus gland
In the superior mediastinum between the sternum and aortic arch
What are the two types of lymphoid organs?
Primary and secondary
Give examples of secondary lymphoid organs
1) Spleen
2) Appendix
3) Tonsils
4) Lymph nodes
Lymph nodes are an example of what?
A secondary lymphoid organ
What is the purpose of the lymph nodes?
To filter lymph
Where are the tonsils located?
The pharynx
What are the 4 types of tonsils?
1) Tubal
2) Pharyngeal
3) Lingual
4) Palentine
Describe the location of the tubal tonsils
A pair of tonsils found in the nasopharynx surrounding the opening to the auditory tubes
What are the adenoids formally named?
The pharyngeal tonsils
Describe the location of the lingual tonsils
Multiple tonsils found in the oropharynx at the base of the tongue (almost looks attached to the tongue on the models)
Describe the location of the palatine tonsils
A pair of tonsils found in the oropharynx just posterior to the oral cavity
What looks like an orange spot behind the tongue on the models in the lab?
The palatine tonsils
What tonsils are found in the oropharynx?
Lingual and palentine
