A __________ is the progenitor of platelets.
A. thrombopoietin
B. thrombocyte
C. megakaryocyte
D. thrombocytoblast
Answer: C. megakaryocyte
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A multifactorial trait is determined by
A. only genetic factors. B. one or more genes and the environment. C. only environmental factors. D. neither genetic nor environmental factors.
Name the two nucleic acids
What will be an ideal response?
There are four types of encapsulated receptors. Select the exception.
A. Arrector pili corpuscles B. Ruffini corpuscles C. Lamellated corpuscles D. Tactile corpuscles E. Krause bulbs
When women with breast cancer undergo surgery to remove the tumor or the entire breast, the axillary lymph nodes are often removed as well. Why?
A. The axillary lymph nodes receive lymph from the breast and may contain cancer cells. B. In removing the breast, the blood supply to the nodes is removed and they will inevitably cease to function. C. It is impossible to remove the breast without physically damaging the lymph nodes. D. With the removal of the breast, there is no further need for lymph drainage and filtering in that part of the body. E. The nerves that supply the axillary lymph nodes are often cut during the breast surgery.