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Lymphatic System-20
Question | Answer |
---|---|
One function of the lymphatic system is to return: | Tissue fluid to the blood stream |
One function of the lymphatic system is to absorb: | Fats and fat soluble vitamins from intestines |
One function of the lymphatic system is to defend: | The body against disease |
Lymph is a clear _______ that resembles _______. | Fluid; plasma |
Lymph is composed of: | Water, electrolytes, waste products, and proteins |
Approximately how much lymph filters from interstitium (tissue space) per day? | 20/L per day |
To where is filtered lymph returned? | Venous blood |
Distribution of lymphatic vessels is similar to what other vessel? | Veins |
Lymphatic capillaries contain _____ and _____. | Pores; valves |
Capillaries drain into larger vessels which drain into the venous system at the junction of the ________ _______ and the _____ ____ ____ on either side. | Subclavian vein; internal jugular vein |
The thoracic duct drains _____ of the body. | 3/4 |
Right lymphatic duct drains remaining ______ (right upper quadrant). | 1/4 |
The lymphatic vessels also clean crap out of our: | Blood capillaries |
Give the shape of lymph nodes. | Small, pea shaped patches of lymphatic tissue |
Lymph nodes function by fltering lymph as it: | Flows through lymphatic vessels |
Name three areas of lymphatic vessel clustering | Cervical, axillary, inguinal |
Lymph nodes consist of lymph nodules (__________) and ________. | Lymphocytes and macrophages; lymph sinuses |
_______ vessels carry lymph TOWARD the lymph node. | Afferent |
_______ vessels carry lymph AWAY from the lymph node. | Efferent |
Tonsils are partially __________ lymph nodes. | Encapsulated |
Location of tonsils: | Nose and mouth |
Three sets of tonsils, which include: | Palatine, Pharyngeal, Lingual |
Thymus gland located in: | Upper mediastinum |
Funtion of thymus gland | Development of immune system before birth and shortly after birth |
When does the thymus gland begin to shrink? | Right after puberty |
The thymus gland secretes _______(hormones) that promote the _________ and maturation of _______ in lymphoid tissue. | Thymosins; proliferation; T-cells |
The only lymphatic organ that does NOT filter lymph | Spleen |
Largest lymphoid organ | Spleen |
What does the spleen do to blood? | Filters and cleans the blood |
Name the two tissue types of the spleen. | Red pulp and white pulp |
The white pulp of the spleen is lymphoid tissue that surrounds: | Blood vessels |
The red pulp of the spleen is made up of blood-filled venous sinuses that also contain: | Lymphocytes and macrophages |
Four additional functions of spleen from notes | 1) Blood storage 2) Destroys old RBCs 3) Erythropoiesis before birth 4) Lymphocyte production |
When does lymphoid tissue reach peak development? | At puberty |
After puberty, what happens to lymphoid tissue? | It shrinks gradually |
With age, what replaces thymus gland tissue? | Connective tissue |
Thymosins ________ in production with age. | Decrease |
Along with decreased thymosin production, what else decreases with age? | Defense mechanisms |