Once a helper T-lymphocyte recognizes an antigen, it begins the immune response by secreting chemical signals called
A. antibodies.
B. immunoglobulins.
C. memory B-lymphocytes.
D. memory T-lymphocytes.
E. cytokines.
E
Anatomy & Physiology
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The corpus callosum forms the roof of the body of the lateral ventricles.
Answer the following statement true (T) or false (F)
Anatomy & Physiology
The hormone __________ is secreted by the adrenal cortex and causes the kidneys to retain sodium.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
Long-term immunity occurs when:
a. T cells form plasma cells b. neutrophils form plasma cells c. macrophages form plasma cells d. B cells form memory cells
Anatomy & Physiology
The only flagellated cells in humans are ________.
A. sperm B. ova C. goblet cells D. tumor cells
Anatomy & Physiology