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Biological Rhythms

Janet Brennan

Biological Rhythms - AQA specifcation A

1 2       3   4 5  
     
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  9                      
         
         
10          
11                      
         
12 13                    
     
   
14                  
 
 
15                
 
16          

Across
2.Spent six months in an underground cave
4.Dream sleep
6.Genetically determined internal structures that regulate body clock
9.Acts as an internal body clock
11.Studied shift workers in a factory
12.Type of rhythm that occurs once every 24 hours
14.Has cycles that occur more than once a day
15.German word for "timegiver"
16.Gland that is sensitive to light and secretes melatonin
Down
1.External factors that influence and act on the body clock
3.Theory that suggest sleep restores the body's abilty to function
5.Theory that relates to environmental factors for survival of the fittest
7.Hormone that induces sleep
8.Easier to adapt to jet lag when travelling east to west
10.Suprachiasmatic nucleus
13.Has cycles that occur less than once a day

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