Infradian and Ultradian rhythms

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K P G O K D O J H E B H L J A O N W G I K
T R V T F U N X P F Q A Q D C A U Q P W N
R E S Y D M K N Q T S O T I V U V J H D V
U M B M Q B F D O C G L T V K F P E Y O W
N E R Y D W O N W X E S A Q N Q P W S D O
A N H K Y K M J E X I M H M I R N P I M H
I S U I X D P B B N P I T X G K C D O T F
D T B N Y R J D I H R V R L B J H C L M R
A R O T H A Q M J A O R F B D C V D O J A
R U W V U J R V C S G I B J I S N E G P L
T A R V U E S S E X E N D V S Q N S I U Q
L L A T T X P S M J S I U X R G C S C U U
U S M E T A I E S T T N A M U G M E A Y X
G Y D C O M T N C K E O K U P S I R L U Y
G N K U O O U T H P R T G Q T G A P O K G
K D U S S C I R K N O O Y T E U E E Q Q K
Q R M B N Q T E B Q N R O D D Q D D L S C
S O N H C G A L F R E E R K A Q Q U X P J
E M I R L B R A V L F S U T N L R I W F O
L E Y O R T Y S K Q P P H K J J J L C I A
D K N W U J L J U V T A R C V U V G Q Q R

Clues

  • ____________ rhythms last over 24 hours (9)
  • Before it was thought that PMS was just a psychological problem but now it's thought to be a __________________ problem with psychological symptoms (13)
  • In the female menstrual cycle the _________ gland produces and releases hormones that cause an egg to ripen and for oestrogen to be released. When the egg ripens progesterone is secreted and the womb lining prepares for pregnancy. (9)
  • In the female menstrual cycle when 2 weeks have passed an there is no pregnancy ____________ decreases and the womb lining begins to shed (12)
  • PMS stands for? (20)
  • SAD is caused by the darkness in winter. This causes higher melatonin levels and therefore lower ____________ levels? Low _________ is associated with depression (9)
  • SAD is where people get what during winter? They recover during the summer. (9)
  • some argue that SAD is a result of ____________ circadian rhythms because people get up at the same time in winter but sleep earlier because of the dark which causes similar symptoms to jet lag (9)
  • The explanation for the female menstrual cycle has been criticised as being? This is because PMS has been used as a legal defence and it suggests that biological rhythms are beyond our control (13)
  • The male cycle last for 20 days and is a variation in body temperature and? (9)

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