Estrogen produced by certain ovarian tumors causes thickening of the endometrium, which most often represents endometrial
A. hyperplasia
B. hypertrophy
C. atrophy
D. dysplasia
E. metaplasia
A
Estrogen stimulates the proliferation of endometrial cells, causing thickening of the endometrium. Such thickening, which is attributable to an increased number of cells, is called hyperplasia . Hypertrophy implies an increased cell mass due to enlargement of individual cells, whereas atrophy means reduced size of the cells or tissues. Dysplasia and metaplasia imply changes in cell differentiation that may occur only if estrogenic stimulation is very long or combined with the action of additional adverse stimuli, such as carcinogens.
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1. Horner's syndrome 2. Cauda equina syndrome 3. Brown-Séquard syndrome 4. Anterior spinal artery syndrome
In third-world countries, many young children with severe vitamin C deficiency will exhibit:
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A) ?colostomy B) ?gastroduodenostomy C) ?gastrostomy D) ?nephrostomy
A student at the mastery skill level perform juggling skills would be expected to
A) toss and catch one scarf with practice. B) toss and catch using three different objects in sequence. C) become frustrated with the difficulty level and go off task. D) toss and catch using two scarves in sequence.