After activation of C3 of the complement system, which of these is a role of its component part, C3b?
A. It acts as an enzyme to convert nitric oxide into hydrogen peroxide.
B. It causes vasodilation of local blood vessels.
C. It acts as a chemotaxin for macrophages.
D. It stimulates the conversion of monocytes to neutrophils.
E. It acts as an opsonin that is recognized by phagocytes targeting the microbe for destruction.
E
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The left lung is larger than the right lung and is divided into three lobes.
Answer the following statement true (T) or false (F)
Each of the following will lead to a decrease in blood pressure except
A) release of renin. B) decrease in blood volume. C) decreased peripheral resistance. D) increased levels of ANP (atrial natriuretic peptide). E) decreased levels of aldosterone.
A reducing agent ________.
A. accepts electrons from an atom or molecule B. donates electrons to an atom or molecule C. donates protons to an atom or molecule D. accepts protons from an atom or molecule E. Both donates electrons and donates protons are correct.
A sensory neuron detecting an intense stimulus will generate action potentials of greater strength as compared to a sensory neuron detecting a weak stimulus.
Answer the following statement true (T) or false (F)