In connective tissue, the extracellular matrix consists of
A. ground substance only.
B. protein fibers and ground substance.
C. cells and protein fibers.
D. cells and ground substance.
E. ground substance and intracellular fluid.
Answer: B
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The joints of the hips and shoulders are examples of ________ joints.
A. pivot B. fibrous C. ball-and-socket D. saddle
The "zona" regions of a particular endocrine gland do not secrete
a. aldosterone b. epinephrine c. cortisol d. androgen e. any of the above
A laboratory rat has an electrode implanted in its brain. By pressing a metal bar in its cage, the animal can activate the electrode. Which of the following is most likely to be true?
A. If the animal presses the bar repeatedly, then the electrode is probably in an area associated with appetitive motivation. B. If the animal presses the bar once, then never touches it again, then the electrode is probably in an area associated with aversive motivation. C. Such an experiment has no relevance to emotional states in humans or human behavior. D. Both if the animal presses the bar repeatedly, then the electrode is probably in an area associated with appetitive motivation and if the animal presses the bar once, then never touches it again, then the electrode is probably in an area associated with aversive motivation are correct. E. All of the choices are correct.
Retrograde amnesia associated with a traumatic head injury can be directly related to the loss of memories considered as both short term and long term, including any events immediately related to the trauma.
Answer the following statement true (T) or false (F)