How is a cancerous tumor different from a benign tumor?
What will be an ideal response?
Although both will appear as an enlargement in a tissue, a cancerous tumor is made up of cancer cells that have lost their ability to recognize their natural borders thus making them, in most cases, more invasive. In addition, cancer cells lose their ability to function as the tissue in which they reside, so as more and more tissue is invaded, the organ loses its ability to function as well.
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Ghrelin is secreted by ________, and increases ________ while decreasing ________.
A. muscle tissue; hunger; growth hormone secretion B. adipose tissue; growth hormone secretion; leptin secretion C. adipose tissue; hunger; fat breakdown D. cells in the stomach; neuropeptide Y secretion; hunger E. cells in the stomach; hunger; fat breakdown
The function of the auditory tube is to
A) help maintain equilibrium. B) amplify sounds. C) equalize air pressure on both sides of the tympanic membrane. D) redistribute endolymph after hearing a sound. E) provide a passageway for sound waves to enter the ear.
What is the principal regulator of Ca2+ metabolism?
a. aldosterone b. cortisol c. parathyroid hormone d. thyroid hormone e. calcitonin
A corpus albicans is
A. the remnant of a corpus luteum. B. part of the vulva. C. the inviable product of oogenesis. D. the remnant of a follicle right after ovulation.