The ions move from zones of high concentration to zones of lower concentration
        
             
        
        
        
Answer: summation
Explanation:
The process which determine if an action potential will be generated or not depends on the combined effects of the signal inputs from multiple sources of  synapse or from the repeated signals from the same synapse.  
If the input signals reach the threshold voltage, action potential will be generated. (all –or –none principle).Therefore, this  process is a determinant of  the likelihood of action potential generation  and it is called summation.
Summation is the ability to integrate multiple PSPs at multiple synapses.it is  the process that determine if an action potential will be generated by combined effects of inhibitory or excitatory  signals.
Based on the pathways and voulme of applied stimuli in the presynaptic neuron;
The signals can be temporal summation ( consecutive  signals  produced from the same  synapse)where action potential of high frequency in the PSN generated action potential in the post synaptic neuron, which summate with one another. Or Spatial where signals inputs are from multiple presynaptic cells.
 
        
             
        
        
        
There's a thing that records sunshine?!?! my life is a lie
        
                    
             
        
        
        
Answer:
Genetic counseling 
Explanation:
If an individual suspected an inherited disorder(usually dangerous) in the parents, or partner's family  and wish to <u>find out or investigate the pattern of inheritance,</u> or t<u>he likelihood of manifesting this conditions later in life</u>,<u> or the chances of the partner passing this down to their offspring</u>, then the expert to visit is  a genetic Counsellor, while the term to describe the genetic  enquires is called genetic counseling. The Counsellor also provides the necessary emotional support that the investigator may need after the discovery.
<u>Besides the above reason, Genetic counseling is also important for</u> 
1.How and when to plan a baby ,if the birth is suspetabe to a disorder
2.the type of genetic screening test to go for,
3. how to protect the child and the mother during pregnancy,incase a disorder is already present,
4. to understand family history and to secure the future of the marriage.
5. the necessary safety and curative measures to give the child after birth.
Genetic Counsellors are certified expert with additional master degree in Genetic counseling.