Increases in cardiac and respiratory rates are mediated by ANS fibers
A) synapsing in the ciliary ganglion.
B) passing through the pterygopalatine ganglion without synapsing.
C) in the lesser splanchnic nerves passing through the celiac ganglion.
D) exiting from the middle and inferior cervical ganglia.
E) None of the answers are correct.
D) exiting from the middle and inferior cervical ganglia.
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Bone cells form concentric circles around longitudinal tubes called
A. lacunae. B. central canals. C. osteons. D. canaliculi.
Which of the following is not a true statement regarding the sympathetic division?
A) PNS ganglia are near the vertebral column. B) Preganglionic fibers are relatively short. C) Preganglionic neurons are located between T1 and L2 of the spinal cord. D) The effects are not widespread but very specific and localized. E) Postganglionic fibers are relatively long.
Another term for platelets is:
a. erythrocytes b. leukocytes c. thrombocytes d. fibrinogen
Candace is a normal-looking 15-year-old girl but has never had a menstrual period, though she has other signs of puberty such as breasts and pubic and axillary hair. During a pelvic exam her physician determines that she has no uterus. Blood tests reveal that she has elevated amounts of testosterone in her blood, similar to that expected in young adult males. Name two typical sources of
testosterone. Given the lack of a uterus, what is the likely source of testosterone in this case? What may be wrong with her? (Hint: Consider general principles of hormone secretion and action.) Why is there no uterus? What genetic test may confirm this suspicion? What will be an ideal response?