BIO 207 Exam 4 UPDATED Exam
Questions and CORRECT Answers
lymph system - CORRECT ANSWER - Responsible for carrying nutrients, wastes,
hormones, and gases to and from body cells and providing protection and immunity from
harmful organisms
lymph nodes - CORRECT ANSWER - Bean-shaped filters that cluster along the lymphatic
vessels of the body. They function as a cleanser of lymph as wells as a site of T and B cell
activation
primary organs/tissues - CORRECT ANSWER - where lymphocytes develop
- thymus & bone marrow
Secondary organs/tissues - CORRECT ANSWER - where lymphocytes collect
-spleen, lymph nodes, tonsils, adenoids, appendix
-SALT, MALT, GALT- skin, mucus, gut-associated lymphoid tissue
-M cells in skin, tonsils, adenoids, intestines monitor flora
erythrocytes - CORRECT ANSWER - red blood cells, carry oxygen
platelets - CORRECT ANSWER - blood clotting
leukocytes - CORRECT ANSWER - white blood cells
moncytes - CORRECT ANSWER - leukocytes that develop into phagocytizing
macrophages when they migrate out of lymphatic circulation into surrounding tissue
, dendritic cells - CORRECT ANSWER - specialized white blood cells that patrol the body
searching for antigens that produce infections
antigen presenting cells (APC's) - CORRECT ANSWER - cells such as B cells,
macrophages, and dendritic cells that can present exogenous antigens to naive or memory T
cells, activating them
macrophages - CORRECT ANSWER - phagocytize foreign substances and help activate T
cells
polymorphonuclear leukocytes (PMNs) - CORRECT ANSWER - Also called neutrophils
Rapid responders, provide the 1st line of defense
Capture and destroy bacterial invaders
Short-lived cells; die when they become engorged with bacteria
Attracted to bacteria by a process called chemotaxis
PMN contains many strong bactericidal and digestive enzymes, called lysosomes
Periodontal pathogens are most effectively destroyed by PMNs.
basophils - CORRECT ANSWER - A circulating leukocyte that produces histamine.
Eisonophils - CORRECT ANSWER - regulate the breaking down of histamine and
lysomes that break down vasoactive molecules
neutrophils - CORRECT ANSWER - A type of white blood cell that engulfs invading
microbes and contributes to the nonspecific defenses of the body against disease.
lymphocytes - CORRECT ANSWER - The two types of white blood cells that are part of
the body's immune system: B lymphocytes form in the bone marrow and release antibodies that
fight bacterial infections; T lymphocytes form in the thymus and other lymphatic tissue and
attack cancer cells, viruses, and foreign substances.
Questions and CORRECT Answers
lymph system - CORRECT ANSWER - Responsible for carrying nutrients, wastes,
hormones, and gases to and from body cells and providing protection and immunity from
harmful organisms
lymph nodes - CORRECT ANSWER - Bean-shaped filters that cluster along the lymphatic
vessels of the body. They function as a cleanser of lymph as wells as a site of T and B cell
activation
primary organs/tissues - CORRECT ANSWER - where lymphocytes develop
- thymus & bone marrow
Secondary organs/tissues - CORRECT ANSWER - where lymphocytes collect
-spleen, lymph nodes, tonsils, adenoids, appendix
-SALT, MALT, GALT- skin, mucus, gut-associated lymphoid tissue
-M cells in skin, tonsils, adenoids, intestines monitor flora
erythrocytes - CORRECT ANSWER - red blood cells, carry oxygen
platelets - CORRECT ANSWER - blood clotting
leukocytes - CORRECT ANSWER - white blood cells
moncytes - CORRECT ANSWER - leukocytes that develop into phagocytizing
macrophages when they migrate out of lymphatic circulation into surrounding tissue
, dendritic cells - CORRECT ANSWER - specialized white blood cells that patrol the body
searching for antigens that produce infections
antigen presenting cells (APC's) - CORRECT ANSWER - cells such as B cells,
macrophages, and dendritic cells that can present exogenous antigens to naive or memory T
cells, activating them
macrophages - CORRECT ANSWER - phagocytize foreign substances and help activate T
cells
polymorphonuclear leukocytes (PMNs) - CORRECT ANSWER - Also called neutrophils
Rapid responders, provide the 1st line of defense
Capture and destroy bacterial invaders
Short-lived cells; die when they become engorged with bacteria
Attracted to bacteria by a process called chemotaxis
PMN contains many strong bactericidal and digestive enzymes, called lysosomes
Periodontal pathogens are most effectively destroyed by PMNs.
basophils - CORRECT ANSWER - A circulating leukocyte that produces histamine.
Eisonophils - CORRECT ANSWER - regulate the breaking down of histamine and
lysomes that break down vasoactive molecules
neutrophils - CORRECT ANSWER - A type of white blood cell that engulfs invading
microbes and contributes to the nonspecific defenses of the body against disease.
lymphocytes - CORRECT ANSWER - The two types of white blood cells that are part of
the body's immune system: B lymphocytes form in the bone marrow and release antibodies that
fight bacterial infections; T lymphocytes form in the thymus and other lymphatic tissue and
attack cancer cells, viruses, and foreign substances.
