Which of the following is part of the limbic system?
A. cerebellum
B. spinal cord
C. primary somatosensory area
D. amygdala
E. reticular formation
Answer: D
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Hypertension is a complication associated with ____
a. too little exercise b. disorders involving the adrenal medulla c. relaxing of blood vessel walls d. stiffening of blood vessel walls e. too much exercise
Fine sediment bottoms with silt support a variety of
a. filter feeders. b. suspension feeders. c. epifauna. d. infauna. e. nekton.
In epithelial tissues ________.
A) cells that are damaged or lost at the surface cannot be replaced B) cells obtain nutrients via blood vessels found in the tissues C) extracellular fluid or fibers separate the individual cells D) there is little or no intercellular space between the cells E) the organelles and other cytoplasmic components are evenly distributed between the exposed and attached surfaces of the epithelial cells
The proteobacterium Rhizobium lives in a close association with legume roots, providing a source of nitrogen for the plant. In return, the plant provides Rhizobium with food produced by photosynthesis. In this relationship, Rhizobium is an example of a(n):
A. parasite B. producer C. pathogen D. mutualist E. methanogen