BTEC L3 Applied Science Unit 8 Assignment B The
Lymphatic System
What is the primary function of the Lymphatic System? - ANSWER The production,
maintenance and distribution of blood cells, called lymphocytes
What is the secondary function of the Lymphatic System? - ANSWER To maintain
the volume balance between the blood and the interstitial fluids.
B Lymphocytes (B Cells) are - ANSWER responsible for synthesizing and secreting
proteins called antibodies that recognize and attack invading microbes and foreign
cells called "Humoral Immunity"
T Lymphocytes (T Cells) are - ANSWER cells that recognize and attack microbes
and foreign cells by attaching and secreting toxins that kill the invaders. "Cell-
Mediated Immunity" - attacking the invader directly.
Natural Killer Cells (NK Cells) - ANSWER recognize and kill abnormal cells in the
body, such as cancer cells. They work similar to T Cells
What are Lymphocytes? - ANSWER A type of white blood cell responsible for
mediating the immune response. There are three types.
Lymph capillaries differ from blood capillaries in that they - ANSWER have no
basement membrane, have large pores in their walls to allow non-selective
movement of large molecules, and they dead end into the tissues.
The left (thoracic) lymph duct drains into - ANSWER the left subclavian vein from the
left side of the body and the right side that is inferior to the diaphragm.
The right lymph duct drains into - ANSWER the right subclavian vein from the right
side of the body that is superior to the diaphragm.
What are the three mechanisms which keep lymph flowing? - ANSWER Smooth
muscle layer of lymph trunks and one-way valves, contraction of skeletal muscle,
negative pressure in the thoracic cavity created by respiratory pumps.
Lymphoid tissues are - ANSWER connective tissues that have accumulations of
lymphocytes.
MALT stands for - ANSWER Mucous-Associated Lymphatic Tissues. They serve as
a line of defense against pathogens.
MALT Tissues include: - ANSWER tonsils, peyer's patches, vermiform appendix.
Lymphatic System
What is the primary function of the Lymphatic System? - ANSWER The production,
maintenance and distribution of blood cells, called lymphocytes
What is the secondary function of the Lymphatic System? - ANSWER To maintain
the volume balance between the blood and the interstitial fluids.
B Lymphocytes (B Cells) are - ANSWER responsible for synthesizing and secreting
proteins called antibodies that recognize and attack invading microbes and foreign
cells called "Humoral Immunity"
T Lymphocytes (T Cells) are - ANSWER cells that recognize and attack microbes
and foreign cells by attaching and secreting toxins that kill the invaders. "Cell-
Mediated Immunity" - attacking the invader directly.
Natural Killer Cells (NK Cells) - ANSWER recognize and kill abnormal cells in the
body, such as cancer cells. They work similar to T Cells
What are Lymphocytes? - ANSWER A type of white blood cell responsible for
mediating the immune response. There are three types.
Lymph capillaries differ from blood capillaries in that they - ANSWER have no
basement membrane, have large pores in their walls to allow non-selective
movement of large molecules, and they dead end into the tissues.
The left (thoracic) lymph duct drains into - ANSWER the left subclavian vein from the
left side of the body and the right side that is inferior to the diaphragm.
The right lymph duct drains into - ANSWER the right subclavian vein from the right
side of the body that is superior to the diaphragm.
What are the three mechanisms which keep lymph flowing? - ANSWER Smooth
muscle layer of lymph trunks and one-way valves, contraction of skeletal muscle,
negative pressure in the thoracic cavity created by respiratory pumps.
Lymphoid tissues are - ANSWER connective tissues that have accumulations of
lymphocytes.
MALT stands for - ANSWER Mucous-Associated Lymphatic Tissues. They serve as
a line of defense against pathogens.
MALT Tissues include: - ANSWER tonsils, peyer's patches, vermiform appendix.
