Exam 2 Flashcards
The two basic functions of the lymph nodes are filtration and immune system activation.
True
The two branches of the immune system are the innate system and the adaptive system.
True
Virus infected cells secrete complement to “warn” neighboring cells of the presence of the virus.
False
Complement are plasma proteins that can be activated by both the innate and adaptive immune system.
True
The adaptive immune system is specific it responds only to recognized targets.
True
Substances capable of triggering the adaptive immune system and provoking an immune response are called antibodies.
False
Gas exchange is the primary function of the conducting zone of the respiratory system.
False
Transpulmonary pressure is the force primarily responsible for keeping the lungs inflated
True
The majority of tissue making up the conducting zone is primarily pseudostratified ciliated columnar epithelium.
True
The oropharynx, because it comes in contact with food, is lined with stratified squamous epithelium.
True
The Haldane effect states the lower the hemoglobin saturation with oxygen, the more CO2 the blood can carry.
True
A low partial pressure gradient for CO2 exists between pulmonary capillaries and alveoli (45mmHG vs. 40mmHG); thus CO2 is exchanged at a much lower rat e than O2 in the alveoli.
False
Macrophages
Develop from monocytes- primary phagocytic cells with voracious appetites.
Antigen Presenting Cells (APCs)
A specialized immune cell that captures, processes and presents antigens to T lymphocytes
Plasma cells
Daughter cells of B lymphocytes; secrete antibodies when stimulated to do so
Neutrophils
The most abundant WBC; become phagocytic on exposure to
T Lymphocytes
Lymphocytes involved with cellular immunity; only recognize damaged/infected cells when they are presented by an APC.
Natural Killer Cells
Reside in the blood and lymph and “police” the body - can lyse and kill cancer cells before the adaptive immune system is activated
B Lymphocyte
A cell with antibodies on its surface – recognizes and binds to specific antigens