________ sensations inform us of the position of the head in space by monitoring gravity, linear acceleration, and rotation.
-Vestibular
-Nociceptor
-Proprioceptor
-Gustatory
-Olfactory
-Vestibular
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What role does dopamine play in motor control?
A) Dopamine enhances the process of motor learning in the cerebellum to reduce motor error. B) Dopamine binds receptors on the caudate nucleus and putamen, inhibiting the globus pallidus. The upper motor neurons are eventually activated. C) Dopamine inhibits the substantial nigra of the basal nuclei and inhibits the upper motor neurons from initiating movement. D) Dopamine binds receptors in the cerebral cortex to activate upper motor neurons to produce coordinated and smooth movements.
If pH increases in a protein buffer system, which of the following is most likely to occur?
A) The amino group of the amino acid accepts an additional hydrogen ion. B) Carbon dioxide is converted to carbonic acid. C) The carboxyl group of the amino acid dissociates, releasing a hydrogen ion. D) In solution, dihydrogen phosphate reversibly dissociates into a hydrogen ion and monohydrogen phosphate. E) Carbonic acid dissociates into hydrogen ions and bicarbonate ions.
Which of the following is NOT a feature of the large intestine?
A. Moves waste by segmentation B. Contains pouches called haustra C. Absorbs water, salts, and some vitamins D. Is shorter and larger in diameter than the small intestine
In general, when comparing the effectiveness of over-the-counter antacids to sodium bicarbonate, how effective was sodium bicarbonate at neutralizing the acidity?
A) It had no effect B) It was a lot more effective C) It was a lot less effective D) It had similar effectiveness