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An organ is a number of tissues that work together to perform a specialized function.
Plants and animals are larger, more complex organisms that rely on many different organs to work together in order to survive.

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The brain receives all of the sensory info gathered by the body and coordinates our responses to various stimuli (environmental changes).
The brain is mainly composed of nervous tissue.
It is also the favourite snack of zombies!

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The skin is the largest organ in our body. It’s main purpose is to protect the body from pathogens – disease causing entities.
The skin also sweats which allows for temperature control of the body.
The skin is composed of epithelial, and connective tissue. It also contains many nerve endings.

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The heart pumps the blood throughout the body.
Vital because blood circulation allows all of the organs share their contribution to our health with each other.
Blood carries oxygen, sugar, proteins, hormones and a number of other important substances that must be shared with all cells in the body.
The heart is composed of muscle, epithelial and nervous tissue.

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The lungs are responsible for gas exchange between the blood and the air around us.
Oxygen enters the blood while carbon dioxide exits the blood.
The alveoli are tiny sacs, resembling grapes, where the gas exchange occurs. They are surrounded by capillaries
– the smallest blood vessels that are designed for trading between blood and cells.
The lungs are composed of epithelial and connective tissue.

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The organs that digest your food have it pretty good.
(Ask Mr. Chen!)
The entire digestive tract
(tube) is composed of all four tissue types.
The esophagus is you food tube that leads down to your stomach.
The stomach is a sac that contains both digestive enzymes and acid that break down food.

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The small intestine is the site where the nutrient from your food are absorbed into the blood so they can be delivered to the cells.
The large intestine has the “crappy” job of taking the unused and indigestible material, mixing it with water, and making feces out of it.

Roots
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Anchor the plant and absorb water.
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Composed of epidermal, meristematic and ground tissue.
Stem
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Supports the leaves and flowers and transports water and nutrients through the plant.
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Composed of epidermal, vascular and ground tissue.

Leaves
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Carry out photosynthesis in order to make glucose.
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Composed of epidermal, vascular and ground tissue.
Flowers
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The sexual organs of plants.
They are used for reproduction.
Composed mostly of meristematic tissue.

Who has both ground tissue and nervous tissue and loves flowers?