Which type of granular leukocyte can engulf up to two dozen bacteria and also produces a respiratory burst that creates harsh chemical agents such as hydrogen peroxide?
a. neutrophil
b. eosinophil
c. basophil
d. lymphocyte
Answer: a. neutrophil
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Microfilaments
A) are usually composed of myosin. B) are hollow, filamentous structures. C) anchor the cytoskeleton to integral proteins of the cell membrane. D) interact with filaments composed of tubulin to produce muscle contractions. E) are found in the cytoplasm radiating away from the centrosome.
Which of the special senses contains receptor neurons that are the only nerve cells in direct contact with the outside environment?
A. equilibrium B. hearing C. smell D. taste E. vision
In anatomical terms, the elbow is the ________ region.
A. brachial B. cubital C. pedal D. axillary
The SA node is located in the ________.
A. right atrium near the junction with the interatrial septum B. right atrium near the junction with the interventricular septum C. left atrium near the junction with the interventricular septum D. right atrium at the junction of the superior vena cava