Organs in Multicellular Organisms

Organs are different tissues formed together.

Major Organs in a Human

• heart
  • pumps blood throughout body
• blood vessels
  • distributes blood throughout body
    

• lungs
  • filters air
• windpipe
  • transports oxygen to body and carbon dioxide out
• blood vessels
  • distributes oxygenated blood throughout body
    

• mouth
  • breaks down food into manageable proportions
• esophagus
  • sends food to stomach
• stomach
  • has acid/enzymes to break down food even more
• liver
  • balances nutrients and makes sure that nothing is toxic
• pancreas
  • breaks down sugars, fats and starches
• small and large intestines
  • digests food
• anus
  • excretes waste left over from food
    

• bones
  • support and form of body
• muscles
  • allows movement to happen
    

• brain
  • controls everything
• spinal cord
  • main path for communication between body and brain
• sensory organs
  • detects changes and sends information to brain
    

Major Organs in a Plant

• leaves
  • photosynthesis for energy
    

• stem (trunk)
  • support leaves and conducts water and nutrients to leaves
    

• roots
  • gathers nutrients and water from ground, may also reproduce asexually
    

TREEEEE

^^ Sorta gave up here B)