The production of hormones in the anterior pituitary is controlled by the ________ as well as by feedback from the target organs.
Fill in the blank(s) with the appropriate word(s).
hypothalamus
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When the concentration of carbon dioxide decreases in the tissue, the precapillary sphincters __________ causing blood flow to the tissue to _________.
A. contract; decrease B. contract; increase C. relax; decrease D. relax; increase E. close; remain the same
During the cell cycle, G1, S, and G2 make up the phase known as what?
a) prophase b) metaphase c) interphase d) mitosis e) anaphase f) telophase
Which statement regarding carbon dioxide transport in the blood is true?
A) The chloride shift occurs when Cl- moves out of RBCs in exchange for HCO3-. B) HCO3- dissociates into CO2 and O2. C) 25% is converted to H2CO3 by carbonic anhydrase. D) H2CO3 dissociates into H+ and HCO3-. E) 93% remains dissolved in plasma as CO2.
Which vessels can act as a blood reservoir by adjusting their total capacity to accommodate variations in blood volume?
a. lymph vessels b. arterioles c. capillaries d. veins e. lymph vessels and veins