Lymphatic And Digestic Flashcards
are small structures that are oval to bean- shaped found along the length of lymphatics, that work as filters for harmful substances. They contain immune cells that can help fight infection by attacking and destroying germs that are carried in through the lymph fluid- aka lymph glands
Lymph nodes
WHERE ARE THE THREE REGIONS OF LYMPH NODE AGGREGATION IN THE
BODY?
• Neck
• Groin
• Axillary
WHAT ARE AFFERENT LYMPHATIC VESSELS?
Lymphatic vessels that enter the lymph node at various sites
WHAT ARE LYMPHATIC SINUSES?
• Spaces between the lymphatic nodules of lymphatic tissue.
• They contain a network of fibers and the macrophage cells
WHAT DO EFFERENT VESSELS UNITE TO FORM?
‘Lymphatic Trunks
WHAT DOES THE LUMBAR TRUNK DO?
Drains lymph from the lower extremities, the walls and viscera of the pelvis, the kidneys and adrenal glands, and most of the abdominal wall
WHAT DOES THE JUGULAR TRUNK DO?
Drains the head and neck
WHAT DOES THE THORACIC TRUNK DO?
Drains the thorax, lungs, heart, diaphragm, and the rest of the liver
WHERE DOES THE THORACIC DUCT EMPTY ALL OF ITS LYMPH INTO?
The left subclavian vein and the right lymphatic duct empties all of its lymph into the right subclavian vein, so the journey of the lymph is now completed.
DESCRIBE THE THYMUS GLAND.
Is a bilobed mass of tissue located in the mediastinum along the trachea behind the sternum
WHERE IS THE BULK OF OUR LYMPHOID TISSUE LOCATED?
• Appendix
WHERE ARE ANTIBODIES PRODUCED?
Immune System
is found in exocrine gland secretions, nasal fluid, tears, gastric and intestinal juice, bile, breast milk, and urine
A. IMMUNOGLOBULIN A
is found on the surface of B lymphocytes and is important in B cell activation
IMMUNOGLOBULIN D
is found in tissue fluids and plasma. It attacks viruses, bacteria, and toxins. It also activates complement, a set of enzymes that attack foreign antigens
IMMUNOGLOBULIN G
is found in exocrine gland secretions and is associated with allergic reactions, attacking allergy- causing antigens.
IMMUNOGLOBULIN E
develops in blood plasma as a response to bacteria or antigens in food
IMMUNOGLOBULIN M
WHAT IS THE JOB OF KILLER T CELLS?
kills virus- invaded body cells and cancerous body cells. They are also involved in graft rejections.
WHAT IS INTERLEUKIN-2 RESPONSIBLE FOR?
stimulates proliferation of T and B cells
WHERE DO EFFERENT LYMPHATICS EXIT THE LYMPH NODE?
At the hilum, a slight depression on one side. Blood vessels and nerves also exit and enter at the hilum
EFFERENT LYMPHATICS UNITE TO FORM HOW MANY LYMPHATIC TRUNKS?
6
WHAT DO T-CELLS BIND TO?
Helper T cells bind with specific antigens presented by macrophages
WHAT ARE PEYER’S PATCHES?
• Also known as aggregated lymphatic follicles.
• They’re found in the wall of the small intestine. They resemble tonsils. Their macrophages destroy bacteria. Bacteria are always present in large numbers in the intestine, and the macrophages prevent the bacteria from infecting and penetrating the walls of the intestine
WHAT DOES THE BRONCHOMEDIASTINAL TRUNK DRAIN?
• Drains the thorax, lungs, heart, diaphragm, and the rest of the liver