The systemic circuit
A. brings oxygen-rich blood from the tissues.
B. sends oxygen-poor blood to the heart.
C. sends oxygen-rich blood to the tissues.
D. brings oxygen-poor blood from the lungs.
Answer: C
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Blood borne factors (e.g. ions, glucose, amino acids) cause the release of all of these hormones except ________
A) insulin B) epinephrine C) calcitonin D) parathyroid hormone (PTH)
Which of the following statements regarding blood clotting is TRUE?
A. Blood clotting requires activation of thrombin. B. Blood clotting is enhanced by prostaglandin I2 (PGI2) and nitric oxide. C. A blood clot is a network of interlacing strands of fibrinogen. D. Blood clotting occurs too rapidly in indivduals with the disease hemophilia. E. Injecting tissue plasminogen activator (t-PA) into a patient who is bleeding will aid blood clotting.
The ________ cells of the blastocyst are responsible for providing food to the developing embryo.
Fill in the blank(s) with the appropriate word(s).
The spindle apparatus is fully formed by the end of
metaphase II. anaphase II. prophase II. prometaphase II. telophase II.