Ch. 19 Extra Study Stuff Flashcards
_____ is the beginning of the lymphatic system.
Lymphatic Capillaries
_____ are Thymus medullary cells
Thymic corpuscles
____ receives lymph from the right lymphatic duct
Right subclavian vein
____ receives lymph from the left half of the head
Thoracic duct
The lymphoid organs include ____, ____, and ____.
Thymus
Spleen
Lymph nodes
____ is the smallest lymphoid organ
Lymph Nodes
____ regulates and coordinates the immune response.
helper T cells and suppressor T cells
____ is the largest mass of lymphoid tissue in the body.
spleen
____ maintains blood-thymus barrier.
Reticular epithelial cells
____ occurs in red bone marrow, thymus, and lymphoid tissues
Lymphopoiesis
____ cause cell-mediated immunity
Cytotoxic T cells
____ are lymphoid nodules in the walls of the pharynx
Tonsils
____ cause antibody-mediated immunity
B cells
____ carry lymph to lymph nodes
Afferent Lymphatics
Three characteristics of a physical barrier such as the skin.
Multiple layers
A coating of keratinized cells
A network of desmosomes locking adjacent cells together
NK cells sensitive to the presence of abnormal plasma membranes are primarily involved in what?
Immunological surveillance
____ is the nonspecific defense that breaks down cells, attracts phagocytes, and stimulates inflammation.
The Complement System
____ are the the proteins that interfere with the replication of viruses.
Interferons
____ are circulating proteins that reset the thermostat in the hypothalamus, causing a rise in body temp.
Pyrogens
____ is the first line of cellular defense against pathogenic invasion.
Phagocytes
How is a fever beneficial?
A high body temp may inhibit some viruses and bacteria or speed their reproductive rates so the disease runs its course more quickly. It also increases the metabolic rate which help defense and the repair process.
