Which of the following statements about TIAs and CVAs is true?
A. TIAs often result in blindness and paralysis.
B. TIAs are often early warning signs of an impending stroke.
C. TIAs are the result of brain tissue death caused by ischemia.
D. A CVA usually results from spasms of diseased cerebral arteries.
Answer: B
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a. infection b. obstruction of a lymph vessel c. surgical removal of a lymph node d. all choices
Which of the following tissues meet at the mucogingival junction?
A. Marginal gingiva and buccal mucosa B. Attached gingiva and palatal mucosa C. Attached gingiva and alveolar mucosa D. Marginal gingiva and alveolar mucosa E. Gingival sulcus and marginal gingiva
The structure labeled F in the diagram belongs to which group of spinal nerves?
a) cervical nerves b) thoracic nerves c) lumbar nerves d) sacral nerves e) coccygeal nerves
In response to dehydration, osmoreceptors stimulate the secretion of ________
A) calcitonin B) bicarbonate ions C) ANP D) sodium ions E) ADH