Lymphatic System Practice Worksheet Template Page 5
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611. T cells and B cells exhibit certain similarities and differences. Place a check (√) the appropriate spaces in
the table below to indicate the lymphocyte type that exhibits each characteristics.
Characteristics
T Cell
B Cell
Originates in bone marrow from stem cells called hemocytoblasts
Progeny are plasma cells
Progeny include regulatory, helper, and cytotoxic cells
Progeny include memory cells
Is responsible for directly attacking foreign cells or virus-
infected cells
Produces antibodies that are released to body fluids
Bears a cell-surface receptor capable of recognizing a specific
antigen
Forms clone upon stimulation
Accounts for most of the lymphocytes in the circulation
12. Match the following terms with the correct descriptions.
A protein released by macrophages and activated T cells that
1.
A. Anaphylatic shock
helps to protect other body cells from viral multiplication
Any types of molecules that attract neutrophils and other
protective cells into a region where an immune response is
2.
B. Antibodies
ongoing
Proteins released by plasma cells that mark antigens for
3.
C. Chemotaxis factors
destruction by phagocytes or complement
A consequence of the release of histamine and of complement
4.
D. Complement
activation
C and G are examples of this class of molecules
5.
E. Cytokines
A group of plasma proteins that amplifies the immune response
by causing lysis of cellular pathogens once it has been “fixed” to
6.
F. Inflammation
their surface
Class of chemicals released by macrophages
7.
G. Interferon
13. Several populations of T cells exist. Match the correct T cell with the descriptions below. Answer may
be used more than once.
1.
Binds with and releases chemicals that activate B
A. Helper T cell
cells, T cells, and macrophages
2.
Activated by recognizing both its antigen and self-
B. Cytotoxic cell
protein presented on the surface of a macrophage
3.
Turns off the immune response when the “enemy” has
C. Regulatory cell
been routed
4.
Directly attacks and lyses cellular pathogens
D. Memory T cell
5.
Initiates secondary response to a recognized antigen
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