Organs inOrgans inAnimals & PlantsAnimals & Plants

WHAT IS AN ORGAN?WHAT IS AN ORGAN? An An organorgan is a is a

number of tissues number of tissues that work together to that work together to perform a specialized perform a specialized function.function.

Plants and animals Plants and animals are larger, more are larger, more complex organisms complex organisms that rely on many that rely on many different organs to different organs to work together in work together in order to survive.order to survive.

The Most SelfishThe Most Selfish The The brainbrain receives receives

all of the sensory info all of the sensory info gathered by the body gathered by the body and coordinates our and coordinates our responses to various responses to various stimuli stimuli (environmental (environmental changes).changes).

The brain is mainly The brain is mainly composed of nervous composed of nervous tissue.tissue.

It is also the It is also the favourite snack of favourite snack of zombies!zombies!

The Most UnderratedThe Most Underrated The The skinskin is the largest is the largest

organ in our body. It’s organ in our body. It’s main purpose is to main purpose is to protect the body from protect the body from pathogens – disease pathogens – disease causing entities.causing entities.

The skin also sweats The skin also sweats which allows for which allows for temperature control of temperature control of the body.the body.

The skin is composed of The skin is composed of epithelial, and epithelial, and connective tissue. It also connective tissue. It also contains many nerve contains many nerve endings.endings.

The Hardest WorkingThe Hardest Working The The heartheart pumps the pumps the

blood throughout the blood throughout the body.body.

Vital because blood Vital because blood circulation allows all of circulation allows all of the organs share their the organs share their contribution to our contribution to our health with each other.health with each other.

Blood carries oxygen, Blood carries oxygen, sugar, proteins, sugar, proteins, hormones and a number hormones and a number of other important of other important substances that must be substances that must be shared with all cells in shared with all cells in the body.the body.

The heart is composed of The heart is composed of muscle, epithelial and muscle, epithelial and nervous tissue.nervous tissue.

The WimpiestThe Wimpiest The The lungslungs are are

responsible for gas responsible for gas exchange between the exchange between the blood and the air around blood and the air around us.us.

Oxygen enters the blood Oxygen enters the blood while carbon dioxide while carbon dioxide exits the blood.exits the blood.

The The alveolialveoli are tiny sacs, are tiny sacs, resembling grapes, where resembling grapes, where the gas exchange occurs. the gas exchange occurs. They are surrounded by They are surrounded by capillaries – the smallest capillaries – the smallest blood vessels that are blood vessels that are designed for trading designed for trading between blood and cells.between blood and cells.

The lungs are composed The lungs are composed of epithelial and of epithelial and connective tissue.connective tissue.

The LuckiestThe Luckiest The organs that digest The organs that digest

your food have it pretty your food have it pretty good. good. (Ask Mr. Chen!)(Ask Mr. Chen!)

The entire digestive The entire digestive tract (tube) is tract (tube) is composed of all four composed of all four tissue types.tissue types.

The The esophagusesophagus is you is you food tube that leads food tube that leads down to your stomach.down to your stomach.

The The stomachstomach is a sac is a sac that contains both that contains both digestive enzymes and digestive enzymes and acid that break down acid that break down food.food.

Still Lucky!...Well not Still Lucky!...Well not really…really…

The The small intestinesmall intestine is the site where the is the site where the nutrient from your nutrient from your food are absorbed food are absorbed into the blood so they into the blood so they can be delivered to can be delivered to the cells.the cells.

The The large intestinelarge intestine has the “crappy” job has the “crappy” job of taking the unused of taking the unused and indigestible and indigestible material, mixing it material, mixing it with water, and with water, and making feces out of it.making feces out of it.

Plant Organs – Roots & Plant Organs – Roots & StemStem

RootsRoots Anchor the plant and Anchor the plant and

absorb water.absorb water. Composed of epidermal, Composed of epidermal,

meristematic and meristematic and ground tissue.ground tissue.

StemStem Supports the leaves and Supports the leaves and

flowers and transports flowers and transports water and nutrients water and nutrients through the plant.through the plant.

Composed of epidermal, Composed of epidermal, vascular and ground vascular and ground tissue.tissue.

Plant Organs – Leaves & Plant Organs – Leaves & FlowersFlowers

LeavesLeaves Carry out Carry out

photosynthesis in order photosynthesis in order to make glucose.to make glucose.

Composed of epidermal, Composed of epidermal, vascular and ground vascular and ground tissue.tissue.

FlowersFlowers The sexual organs of The sexual organs of

plants. They are used plants. They are used for reproduction.for reproduction.

Composed mostly of Composed mostly of meristematic tissue.meristematic tissue.

Who has both ground tissue Who has both ground tissue and nervous tissue and and nervous tissue and

loves flowers?loves flowers?