What is the role of the lymphatic system in the metastasis of cancers?
A) The lymphatic system does not play a role in the prevention or promotion of cancer metastasis.
B) Cells from established tumors enter lymphatic vessels. Eventually, secondary tumors develop in other parts of the body.
C) Cells from established tumors enter lymphatic vessels and are degraded in lymphoid nodules. This prevents the development of tumors in other parts of the body.
D) Cells from established tumors enter lymphatic vessels and are destroyed by lymphocytes in the lymph nodes. This action prevents the development of tumors in other parts of the body.
B
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________ is a disorder affecting the ability to speak or read
A) Aphasia B) Ataxia C) Apraxia D) Bell's palsy E) Dysphagia
A simple cuboidal epithelium would be found
A) lining the urinary bladder. B) lining the small intestine. C) lining kidney tubules. D) lining the stomach. E) at the surface of the skin.
Glial cells differ from neurons in that they
A. are smaller and capable of mitosis. B. are larger and capable of meiosis. C. are found only in the CNS. D. transmit nerve impulses much more slowly. E. are found only in the PNS.
Concerning the exchange between blood and interstitial fluid at systemic capillaries,
A. the fluid reabsorbed into the capillary exactly matches the amount filtered by the capillary. B. more fluid is absorbed and reabsorbed than is filtered. C. more fluid is filtered than reabsorbed.