Implantation normally occurs
a. in the oviduct.
b. about 3 days after fertilization.
c. during the secretory, or progestational, phase.
d. both (b) and (c) above.
e. all of these answers.
C
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Neuronal axons typically have abundant
A. voltage-gated channels for Na+ that open in response to depolarization. B. ligand-gated channels for K+. C. ligand-gated channels for Na+. D. voltage-gated channels for K+ that open in response to hyperpolarization. E. voltage-gated channels for Ca2+.
The cells that give rise to red blood cells, platelets, and most white blood cells are called
A. megakaryoblasts. B. lymphatic stem cells. C. myeloid stem cells. D. erythroblasts.
Which of the following is not a function associated with the spinal cord?
A. To conduct motor information down the cord B. To conduct sensory information up to the brain C. To coordinate the alternating contraction of several muscle groups associated with locomotion D. To protect neurons in both the ascending and descending tracts E. To mediate a reflex, such as the withdrawal of a hand from pain
A friend who has GERD tells you that her doctor suggested she sleep on her left side at night. Why?
A. The stomach sits largely on the right side, so lying on your left side helps keep the contents in the stomach away from the lower esophageal sphincter. B. The stomach sits largely on the left side, so lying on your left side helps keep the contents in the stomach away from the lower esophageal sphincter. C. The stomach sits largely on the right side, so lying on your left side helps keep the contents in the stomach away from the lower pyloric sphincter. D. The stomach sits largely on the left side, so lying on your left side helps keep the contents in the stomach away from the lower pyloric sphincter.