Answer the following statements true (T) or false (F)
1. The thyroid gland is unique because it stores the hormones it produces.
2. A person with a simple goiter would probably have high blood levels of TSH.
3. Calcitonin causes an increase in blood calcium levels.
4. Parathyroid hormone causes a decrease in blood calcium levels.
5. Bone cells are “target organs” for both calcitonin and parathyroid hormone.
1. TRUE
2. TRUE
3. FALSE
4. FALSE
5. TRUE
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Where is the orbicularis oculi?
a) D b) E c) F d) G e) H
The ABCDE rule is used to distinguish normal moles from:
A) squamous cell carcinoma. B) melanoma. C) freckles. D) basal cell carcinoma.
A stimulus to which afferent neurons X, Y, and Z are sensitive is applied in the middle of Y's receptive field. The same stimulus simultaneously activates receptors on the periphery of the receptive fields of X and Z
Which of the following is likely to be true? A. The receptor potential in neurons X and Z will be more depolarized than in neuron Y. B. It won't be possible to discriminate which neuron's receptive field was stimulated at its center. C. The frequency of action potentials in the afferent pathway from neuron Y will be increased by excitatory interneurons projecting from the afferent pathways from neurons X and Z. D. The frequency of action potentials in neuron Y will be greater than that in neurons X and Z. E. The receptor potentials in all three neurons will achieve the same, average value.
Blood plasma is slightly ________; if pH drifts out of the normal range, dire consequences can result from alterations in the structure of ________.
A. basic; proteins B. basic; glucose C. acidic; glucose D. acidic; proteins E. acidic; glycogen