Podcast
Questions and Answers
The ______ is the largest lymphoid organ in the body.
The ______ is the largest lymphoid organ in the body.
spleen
The ______ is the only one interposed in blood circulation.
The ______ is the only one interposed in blood circulation.
spleen
The ______ is covered by a capsule which extends to form trabeculae.
The ______ is covered by a capsule which extends to form trabeculae.
spleen
The ______ contains trabecular arteries and veins.
The ______ contains trabecular arteries and veins.
Signup and view all the answers
The ______ is an organ that is interposed in blood circulation.
The ______ is an organ that is interposed in blood circulation.
Signup and view all the answers
The ______ is the largest organ in the lymphoid system.
The ______ is the largest organ in the lymphoid system.
Signup and view all the answers
Trabeculae are formed from the extension of the ______ of the spleen.
Trabeculae are formed from the extension of the ______ of the spleen.
Signup and view all the answers
Trabecular arteries and veins are located in the ______ of the spleen.
Trabecular arteries and veins are located in the ______ of the spleen.
Signup and view all the answers
The ______ is a structure that extends from the capsule to form trabeculae.
The ______ is a structure that extends from the capsule to form trabeculae.
Signup and view all the answers
The ______ is a lymphoid organ that plays a vital role in blood circulation.
The ______ is a lymphoid organ that plays a vital role in blood circulation.
Signup and view all the answers
Study Notes
Lymphatic System
- The lymphatic system is a drainage system that assists the venous system by removing larger particles that escape into tissue fluid.
- It reabsorbs excess interstitial fluid and transports dietary lipids.
Components of the Lymphatic System
- Lymph: a clear fluid that flows through the lymphatic vessels
- Lymphatic Vessels:
- Lymphatic capillaries
- Lymphatic vessels
- Lymphatic trunk
- Lymphatic ducts
- Lymphatic Organs:
- Thymus
- Lymph nodes
- Spleen
- Tonsils
- Lymphatic Cells
Lymph Nodes
- Covered by a dense, irregular connective tissue capsule that extends to form trabeculae
- Divided into outer cortex and inner medulla
- Contain lymphoid nodules
Lymphatic Nodules
- Found in lymph nodes and the lamina propria of the intestine
Tonsils
- Palatine tonsils and pharyngeal tonsil
- Covered by stratified, ciliated, columnar epithelium with no crypts
Thymus
- Located in the mediastinum
- Has a connective tissue capsule that penetrates the parenchyma and divides it into incomplete lobules
- Each lobule has:
- Peripheral dark zone called the cortex
- Central light zone called the medulla, containing thymic corpuscles or Hassall corpuscles
- Thymic corpuscles or Hassall corpuscles:
- Characteristic of the thymus, but their function is unknown
- Contain flat epithelial reticular cells arranged concentrically, filled with keratin filaments, and sometimes calcified
Spleen
- The largest lymphoid organ in the body, interposed in blood circulation
- Covered by a capsule that extends to form trabeculae
- Trabeculae contain trabecular arteries and veins
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the functions and components of the human lymphatic system, including its role in drainage and the transportation of dietary lipids.
