Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a gradual, generalized increase in muscle tone, which is the main symptom of
A) Parkinson's disease.
B) rabies.
C) Alzheimer's disease.
D) myasthenia gravis.
E) tetanus.
A
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Imagine eating a soda cracker, which is basically starch, fat, protein, and salt. How would each of these components be digested? Where within the digestive system would they be digested? Are any accessory organs involved?
Which of the types of epithelial free surfaces is correctly matched with its function?
A) smooth — decreases friction B) with microvilli — cell moves from place to place C) ciliated — increased surface area D) with goblet cells — absorption E) All of these are correctly paired.
Before beginning orthodontic treatment, a patient may have her wrist and hand x-rayed to determine her stage of growth. What long bone feature will the orthodontist use to assess this?
A. Epiphyseal plate B. Osteon C. Compact bone D. Spongy bone E. Periosteum
Potentially damaging stimuli that result in pain are selectively detected by:
A) photoreceptors. B) nociceptors. C) chemoreceptors. D) proprioceptors.