What Is the Usual Time Period Between the First Day

question 7

Multiple Choice

What is the usual time period between the first day of the last menstrual period and the time of birth? It is:

• A)38 weeks
• B)termed the gestation period
• C)referred to as gravidity
• D)the embryonic period

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Definitions:

Temporal Summation

A process by which multiple subthreshold excitatory post-synaptic potentials (EPSPs) combine within a brief period to produce a larger postsynaptic potential.

Spatial Summation

The process by which multiple synaptic inputs from different locations on the same neuron combine to influence the firing rate or activity of the neuron.

Dendrites

The branched projections of a neuron that act to conduct the electrochemical stimulation received from other neural cells to the cell body.

Back Propagation

Reverse movement of an action potential into the soma and dendritic field of a neuron; postulated to play a role in plastic changes that underlie learning.