What changes occur in the endometrium as the time of possible fertilization approaches?
A) The endometrium secretes estrogen.
B) The endometrium enters the secretory phase.
C) The endometrium enters the proliferative phase.
D) Menstruation occurs.
Answer: B
You might also like to view...
If vaccinia viruses were not both immunogenic and relatively benign, they would likely not be a favored vehicle for vaccinations
Indicate whether the statement is true or false.
The most widely accepted and supported model that explains the movement of phloem sap in
flowering plants is the ____ mechanism.
a. cohesion-tension b. translocation c. pressure flow d. osmosis e. transpiration
What benefit do animals get from having very long loops of the nephron?
A) They can send more water back to circulation. B) They can excrete more salt. C) They can send more glucose back to circulation. D) They make less nitrogenous waste products.
A red-shouldered hawk chases a falcon away from a dead squirrel. This is an example of:
A) coexistence. B) interspecific competition. C) commensalism. D) mutualism.