Chemicals responsible for the dilation and increased permeability of blood vessels in the inflammatory response are called
A) histamines.
B) antigens.
C) antibodies.
D) lymphocytes.
Correct Answer:
Verified
Q5: Macrophages act as
A)scavengers of worn-out cells.
B)healers of
Q6: Tears,saliva,and vaginal secretions are rich in _
Q7: A marker on the surface of a
Q8: Which of the following is a defense
Q9: Swollen lymph nodes are an indication of
A)anemia.
B)poor
Q11: T and B cells help preserve the
Q12: Vessels,organs,and structures that pick up excess fluids,then
Q13: A microorganism that causes disease is a(n)
A)antigen.
B)toxin.
C)pathogen.
D)antibody.
Q14: Hair-like protrusions that sweep foreign substances out
Q15: Special growth stimulants released by helper T
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