Which of the following is a stimulus for erythropoiesis?
a) reduced availability of oxygen
b) reduced carbon dioxide availability
c) leukemia
d) high hematocrit
Ans: a) reduced availability of oxygen
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Which of the following statements regarding hearing is TRUE?
A. Low-pitched tones selectively cause vibration of the basilar membrane at a point closer to the oval window than high-pitched tones do. B. Sound is amplified as it is conducted from the oval window to the tympanic membrane. C. The pitch of sounds is conveyed by the amplitude of the vibration of the oval window. D. The loudness of a sound is conveyed by the frequency of action potentials generated in the cochlear nerve.
Hormones produced by the thyroid include
a. calcitonin b. thyroxine c. PTH d. a and b e. b and c
The ________ ligaments attach the epicondyles of the femur to the tibia and fibula.
Fill in the blank(s) with the appropriate word(s).
Explain clonal expansion and the roles and interactions of effector cells, memory cells, naive lymphocytes, and plasma cells.
What will be an ideal response?