CK12 Life Science

Points to Consider

• The biological clock located just below the human brain controls behaviors such as the
  sleep-wake cycle.


• Thebrainispartofthenervoussystem. Whatotherbodysystemarefoundinhumans?


• Which body system includes the bones? Which system includes the muscles? What
  do bones and muscles do?

Image Sources

(1) http://commons.wikimedia.org/wiki/File:Dogs_playing.JPG. CC-BY-SA 2.0.

(2) http://en.wikipedia.org/wiki/File:Larus_Dominicanus_with_young.jpg.

CC-BY 2.5.

(3) Peacock_front02_-_melbourne_zoo.jpg. GNU-FDL.

(4) http://commons.wikimedia.org/wiki/Image:Pajeczyna2.jpg. GNU-FDL.

(5) http://commons.wikimedia.org/wiki/Image:Nest_bird.jpg. Public Domain.

(6) http://www.wettropics.gov.au/st/rainforest_explorer/Resources/Images/

animals/invertebrate/greenTreeAnt.jpg. Public Domain.

(7) http://commons.wikimedia.org/wiki/Image:Breeding.jpg. GNU-FDL.

(8) http://commons.wikimedia.org/wiki/File:Husa_velk%C3%A1.jpg. GNU-FDL.

(9) http://commons.wikimedia.org/wiki/Image:BrantaLeucopsisMigration.jpg.

CC-BY-SA 2.5.

(10) http://en.wikipedia.org/wiki/File:Greifreflex.JPG. Public Domain.

(11) http://en.wikipedia.org/wiki/File:Scarecrow1.jpg. GNU-FDL.

(12) http://en.wikipedia.org/wiki/Image:
Blue-footedBooby%28Sulanebouxii%29-displaying.jpg. CC-BY-SA 2.0.

(13) Pride_of_lions.JPG. Public Domain.

(14) http://commons.wikimedia.org/wiki/Image:Wasp_starting_nest.jpg.
CC-BY-SA 3.0.

(15) http://commons.wikimedia.org/wiki/Image:Bird_nest.jpg. CC-BY-SA 3.0.

(16) http://commons.wikimedia.org/wiki/File:Hunting_cat.jpg. CC-BY 1.0.