Because all action potentials are alike, how does the brain separate situations that require immediate attention from ordinary "positional" reports?
What will be an ideal response
The importance of a stimulus is derived from the number of stimuli received from the same source. The frequency of impulse transmission indicates the stimulus intensity and the brain responds appropriately.
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Tremor at rest, shuffling gait, stooped posture, and expressionless face are characteristics of ________
A) Parkinson's disease B) Alzheimer's disease C) cerebellar disease D) Huntington's disease
Identify the urethra in the following figure
A) A B) B C) C D) D E) E
The villi, microvilli and plicae circularis function to
A. liberate hormones. B. promote peristalsis. C. produce bile. D. increase surface area for absorption. E. stimulate chemical digestion.
What organ system is responsible for gas exchange, sense of smell, and creating pressure gradients necessary to circulate blood and lymph?
A. Cardiovascular system B. Respiratory system C. Nervous system D. Lymphatic system