Hondros Bio 254 Exam 1Questions & Answers(RATED A)
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Hondros Bio 254
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Hondros Bio 254
Chapter 31) lymphatic system -ANSWER Jan 2021
What does the lymphatic system do? -ANSWER Maintains fluid balance in the internal environment.
-interstitial fluid is absorbed by tissue cells and reabsorbed by the blood
-absorbs fat in the intestine with special lymph structures called lacteals
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Hondros Bio 254 Exam 1Questions & Answers(RATED A ) (Chapter 31) lymphatic system -ANSWER Jan 2021
What does the lymphatic system do? -ANSWER Maintains fluid balance in the internal environment.
-interstitial fluid is absorbed by tissue cells and reabsorbed by the blood
-absorbs fat in the intestine with special lymph structures called lacteals
edema -ANSWER puffy swelling of tissue from the accumulation of fluid that can cause tissue distruction
the lymph vessels act as "drains " thats- -ANSWER collect excess tissue fluid and > venous blood
lymph -ANSWER clear, water- appearing fluid found in the lymphatic vessels. -This fluid is isotonic
Interstitial Fluid -ANSWER -fills space between cells
-has a lower protein concentration
lymphatic capillaries -ANSWER -microscopic
-blind end vessel that are the origin of lymphatic vessels -lymphatic and blood capillary network work side by side
-lymphatic capillaries merge from the lymphatic vessels and drain into the lymphatic trunk
what type of cells are lymphatic capillaries made up of? -ANSWER flattened endothelial cells (simple Squamous)
lymphatic vessel contains -ANSWER -thin walls
-valves (these valves are one way)
-lymph nodes
as the lymph flows from thin walled capillaries into vessels with a larger diameter.. the walls become THINER or Thicker? -ANSWER thicker- similar to arteries and veins
Lymphatic vessel functions -ANSWER -high molecular weight substance and even particulate matter from interstitial space
-lacteals absorb fat and other nutrician from the small intestine -PROTIENS THAT ACCUMULATE IN THE Tissue can only return to the blood through lymphatics
chyle -ANSWER milky lymph found in lacteals after digestion contain 1-2% fat.
Lymph from the upper right quadrant drains into the_______ _______ _________ and empties into the _____________ vein -ANSWER right lymphatic duct, subclavian vein
Lymph for the rest of the body drain into the __________ _________ -ANSWER thoracic duct
thoracic duct originates in the -ANSWER cisterna chyli
where is the cisterna chyli located? -ANSWER Anterior to the first two lumbar vertebrae.
How is lymph circulated through the body -ANSWER through muscles contraction and relaxation
lymphatic pump -ANSWER Lymph moves in the right direction due to the large number of valves
The flow of lymph can be visualized in a ______________ -ANSWER Lymphangiogram
lymphatic pump -ANSWER -inspiration establishes fluid pressure gradient
-skeletal muscles contractions increase flow
-total volume of lymph depends on depth on inspiration -lymph enter and return rates very
- depends on the amount of physical activity and other factors
What is the shape of a lymph node? -ANSWER oval shaped structure
where does lymph enter the lymph node. -ANSWER afferent vessels
-moves slowly through a sinus drain into efferent lymphatic vessel
Lymph nodes act as a biological ___________? -ANSWER filter
Lymph emerges by one or more ______________ vessles -ANSWER efferent
Trabeculae -ANSWER extend from the capsule toward the center node
Cortical Nodules -ANSWER composed of packed lymphocytes
-surrounded by a less dense area
Medullary sinus- -ANSWER capable of phagocytosis
-lined with cells
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