Which of the following is a monosynaptic reflex?
a. stretch reflex
b. withdrawal reflex
c. crossed-extensor reflexes
d. All of the above
e. Only c and d
A
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What method do cells use to transfer small to moderate-sized water-soluble substances across the membrane?
a. vesicular transport b. carrier-mediated transport c. phagocytosis d. protein-assisted osmosis e. electrical diffusion
Which characteristic describes the plasma membrane of a cell?
Carbohydrates can be integral or peripheral. Carbohydrates can either be identified as integral or peripheral. Polar phospholipids are found in the center of the plasma membrane. The fluid mosaic model implies a standardized and constant structure. The cellular proteins can serve as antigens.
Plasma
A. is one of the formed elements. B. transports waste products but not nutrients. C. accounts for less than half of the blood volume. D. is serum plus formed elements. E. is the liquid matrix of the blood.
With regard to the healing of a skin wound, macrophages ________.
A. produce and secrete collagenous fibers B. phagocytize and digest tissue debris C. stimulate epithelial cells to multiply D. make capillaries more permeable, allowing white blood cells to migrate into the area E. release histamine to increase blood flow to the area