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Tissues, organs, digestive system
8
Transcript
Your body is made up of trillions of cells and those cells work together. Cells working together to perform a certain function form a tissue.
How do cells work together?
An organ is several kinds of tissue working together for the same function. Your skin is an organ- it's made of multiple layers of epithelial tissue. Your heart is an organ- made up of epithelial, muscle, nervous, and connective tissues.
Human heart
Cells, tissues, organs,
and the digestive system
Human Digestive System
Your body is covered and lined with epithelial tissue. Epithelial tissue is your skin. It also lines your internal organs.
Most of your body mass is covered in muscle tissue. When you move, muscle tissue contracts and relaxes to move your skeleton.
The bones, cartilage, tendons, and ligaments of your skeleton are made up of connective tissue.
The digestive system helps the body get the nutrients it needs from food. First, chemicals break food down into nutrients. then, nutrients are moved into the blood. Blood moves the nutrients to each of the body's cells.
Nervous tissue sends messages to your body. Nervous tissue is found in the brain, spinal cord, and nerves.
Vocabulary
Your body is organized for one
important function- to keep you
alive and healthy. Each of your
cells works to keep itself healthy.
cells work with other cells to make
tissues, tissues work together in
organs, and organs work together to
make organ systems, which work
together to keep your body
functioning.
Yes... there's more :(
Tissue-
a group of cells
that work together to perform a certain function
Organ-
A group of tissues that work together to perform a certain function
Organ system-
A group of organs that work together to perform a certain function
Digestive system-
Organ system that turns food into nutrients that body cells need for energy, growth, and repair.
Aaaaaand you're
DONE!
Organs working together to perform a function are called an organ system. There are 10 major organ systems in your body. One is the digestive system. It breaks down food into chemical nutrients that body cells need for growth, energy, and repair.
Body Organization
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