Podcast
Questions and Answers
Which lymphatic vessel is located on the left side of the body?
Which lymphatic vessel is located on the left side of the body?
- Afferent lymphatic vessel
- Efferent lymphatic vessel
- Thoracic duct (correct)
- Right lymphatic duct
What is the primary function of lymphatic vessels?
What is the primary function of lymphatic vessels?
- Regulate blood pressure
- Transport oxygen to tissues
- Drain proteins and fluid from tissue spaces (correct)
- Aid in digestion and nutrient absorption
Which part of the body is known to lack lymphatic vessels?
Which part of the body is known to lack lymphatic vessels?
- Dermis of skin
- Spleen
- Mucous membranes
- Bone marrow (correct)
What distinguishes larger lymphatic vessels from smaller ones?
What distinguishes larger lymphatic vessels from smaller ones?
Where do the thoracic duct and right lymphatic duct drain lymph into?
Where do the thoracic duct and right lymphatic duct drain lymph into?
What type of lymphatic vessels carry lymph into lymph nodes?
What type of lymphatic vessels carry lymph into lymph nodes?
What feature gives larger lymphatic vessels a beaded appearance?
What feature gives larger lymphatic vessels a beaded appearance?
Which of the following tissues has an extensive lymphatic network?
Which of the following tissues has an extensive lymphatic network?
What is the primary structural difference between lymph nodes?
What is the primary structural difference between lymph nodes?
Which characteristic describes lymphatic capillaries?
Which characteristic describes lymphatic capillaries?
Flashcards
Lymphatic Capillaries
Lymphatic Capillaries
Small, closed networks of vessels that absorb lymph.
Thoracic Duct
Thoracic Duct
Main lymphatic vessel on the left side, draining into the bloodstream.
Right Lymphatic Duct
Right Lymphatic Duct
Lymphatic vessel on the right side that drains lymph into veins.
Lymph
Lymph
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Valves in Lymphatic Vessels
Valves in Lymphatic Vessels
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Function of Lymphatic Vessels
Function of Lymphatic Vessels
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Afferent Lymphatics
Afferent Lymphatics
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Efferent Lymphatics
Efferent Lymphatics
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Lymph Nodes
Lymph Nodes
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Parts of Body Without Lymphatics
Parts of Body Without Lymphatics
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Study Notes
Lymphatic Vessels
- Lymphatic capillaries start as a network of capillaries near blood capillaries.
- Capillaries merge to form larger lymphatic vessels.
- Lymphatic vessels travel through lymph nodes.
- Vessels end in collecting ducts (thoracic and right lymphatic ducts).
- These ducts empty lymph into the bloodstream (at the junction of the internal jugular and subclavian veins).
Characteristics of Lymphatic Vessels
- Lymphatic capillaries are wider than blood capillaries.
- Endothelium is thin, allowing water, crystalloids, and proteins to pass.
- Pressure allows larger particles (like blood cells) to enter capillaries.
- Larger vessels have valves for one-way flow, creating a beaded appearance.
Purpose of Lymphatic Vessels
- Drain fluid (lymph) containing proteins from tissues that cannot be reabsorbed into the blood.
- Lymph returns to the bloodstream.
- Lymphatic vessels assist veins.
Body Parts Without Lymphatics
- Central nervous system: Replaced by perivascular spaces.
- Bone marrow
- Spleen
Lymph Nodes
- Localized bean-shaped collections of lymphoid tissue.
- Interrupt lymphatic flow.
- Located singly or in groups in specific body locations.
- Afferent lymphatics bring lymph into the node.
- Efferent lymphatics carry lymph out of the node.
- Each node receives several afferent lymphatics and produces fewer efferent lymphatics.
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