You've looked for your keys for the past ten minutes in several different places. The ability to keep track of the places you've already looked is stored in:
A) long-term potentiation (LTP). B) long-term memory.
C) short-term (working) memory. D) immediate memory.
Answer: C
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What comprises a motor unit?
A. One neuromuscular junction B. The distance from one Z disc to the next C. One thick filament and all thin filaments with which it forms cross-bridges D. One nerve fiber and all the muscle fibers innervated by it E. One myofibril of a muscle fiber
Drinking alcohol can cause dehydration, which makes the blood hypertonic. Which option best describes the consequences of this hypertonic blood?
a. Hypertonic blood forces water into the interstitial fluid, which makes the interstitial fluid hypotonic. This, in turn, makes the interstitial fluid lose water to the cells b. Hypertonic blood draws water out of the interstitial fluid, which makes the interstitial fluid hypertonio. This, in turn, draws water out of the cells. c. Hypertonic blood draws water out of the interstitial fluid, which makes the interstitial fluid hypotonio. This, in turn, makes the interstitial fluid lose water to the colls. d. Hypertonic blood will lose water to the interstitial fluid, which makes the interstitial luid hypertonic. This, in turn, causes water to move into the cells
The fact that cone cells exhibit less neuronal convergence than rod cells explains which of the following?
A. Rod cells cannot distinguish different colors from each other. B. Rod cells do not function in bright light. C. No images are perceived within the optic disc. D. Cone cells do not see in black and white. E. Cone cells are responsible for high resolution images, but require bright light to function.
Which of the following statements regarding the gall bladder is true?
(a) it synthesises bile (b) it is lined by simple columnar epithelium (c) bile leaves the gallbladder via the common bile duct (d) it has no muscle cells in the walls (e) it is affected by the hormone secretin