If you have ever had a chance to witness a childbirth, then you know it is an amazing event. However, even after the baby has been removed from the mother, her work is not complete in terms of labor. Why?
What will be an ideal response?
Childbirth has three distinct stages, with the dilation and expulsion stages being dedicated to delivery of the infant from the womb to the outside world. The final stage involves removal of the placenta, a large structure that helped sustain the baby during the entire pregnancy. Until the placenta is moved out of the uterus, the mother's blood supply is still open to the outside because the umbilical cord is attached to the placenta and the amniotic membrane was ruptured during either the dilation or expulsion stages.
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A neurotransmitter that was excitatory would produce an ______ that would ____ the postsynaptic neuron.
A. EPSP, depolarize B. EPSP, hyperpolarize C. IPSP, depolarize D. IPSP, hyperpolarize E. IPSP, not affect
Which system involves plasma proteins activated when they contact a bacterial cell?
a. infection b. complement c. bodyguard d. enhancer e. defender
Below is a set of experimental results relating the growth (+) of Neurospora on several media (MM = minimal medium). Based on the information provided, present the biochemical pathway and the locations of the metabolic blocks
Strain Medium MM MM+A MM+B s111 - + + t60 + + + s211 - - +
When you step on a nail, pain receptors send action potentials via ________ neurons to the spinal cord, where they synapse with __________ neurons which in turn synapse with _______ neurons which send action potentials to _________.
Fill in the blank(s) with the appropriate word(s).