Metacarpal bones form the framework of the:
a. wrist
b. hand
c. ankle
d. foot
b. hand
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Which of the following is the correct sequence of events in phagocytosis shown in the figure?
a) pseudopods surround particle > phagosome formed > fusion of lysosome and phagosome > digestion by lysosomal enzymes > residual body formed b) phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > digestion by lysosomal enzymes > residual body formed c) phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > residual body formed > digestion by lysosomal enzymes d) residual body formed > phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > digestion by lysosomal enzymes e) fusion of lysosome and phagosome > residual body formed > phagosome formed > pseudopods surround particle > digestion by lysosomal enzymes
You examine a cell by electron microscopy and find a molecule on the outside of the cell and in vesicles in the cytoplasm. The most likely explanation is that this substance moved into the cell by
A. apoptosis. B. osmosis. C. endocytosis. D. diffusion. E. facilitated diffusion.
The knee-jerk (patellar) reflex is classified as which of the following?
A. Crossed extension reflex B. Golgi tension reflex C. Flexor reflex D. Intersegmental reflex E. Monosynaptic reflex
The ability of CO2 to alter the affinity of hemoglobin for O2, which enhances O2 delivery to tissues and O2 uptake in the lungs, is referred to as:
A. chloride shift B. Haldane effect C. Bohr effect D. Hamburger phenomenon E. Graham's effect