Levels of organization
Download
1 / 12

Levels of Organization - PowerPoint PPT Presentation


  • 465 Views
  • Updated On :
loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Levels of Organization' - Renfred


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Levels of organization l.jpg

Levels of Organization

Mrs. McCabe

04/08

Adapted from Joe Krupens, Standley Middle School


Division of labor the first level l.jpg
Division of Labor & The First Level

Within multi-cellular organisms there is division of labor. Division of labor means that the work (labor) of keeping the organism alive is divided (division) among the different parts of the body. Each part has a job to do and as each part does its special job, it works in harmony with all the other parts.

The arrangement of specialized parts within a living thing is sometimes referred to as levels of organization. Cells of course, are the first level of organization.


Cells lots of different kinds here are two examples can you guess what kind l.jpg
Cells: LOTS of Different Kinds!Here are two examples. Can you guess what kind?

Nerve Cells

Skin Cells


Second level tissues l.jpg
Second Level: Tissues

In any multi-cellular organism, cells rarely work alone. Cells that are similar in structure and function are usually joined together to form tissues. Tissues are the second level of organization.

There are four basic/major types of tissues in the human body: Muscle tissue, nerve tissue, connective tissue, and epithelial tissue.(There are other kinds of tissues besides these.) Other kinds of tissue include bone tissue (a strong solid tissue that gives you shape and support) made of bone cells in your body form bone tissue. Blood cells in your body are part of blood tissue, a liquid tissue responsible for transporting food and oxygen throughout the body.


Let s look again l.jpg
Let’s Look Again…

Here are the cells we saw before, but if you look closely, you can see that they all look similar. Nerve cells working together make nerve tissue, and skin cells make up a special type of epithelial tissue.


Taken one at a time l.jpg
Taken One At A Time….

Connective tissue connects and supports parts of the body. Blood, fat, ligaments, cartilage, bones, and tendons are all connective tissues.

Nerve tissue carries messages back and forth between the brain and every other part of the body. The brain, spinal cord, and nerves are made up of nerve tissue.

Epithelial tissue covers and lines the surfaces of your body and organs, inside and out. They primarily serve as protective barriers. Skin is one example.

Muscle tissue can contract, or shorten. Because of this, muscle tissue makes parts of your body move.


Slide7 l.jpg

Level Three: OrgansWhen a bunch of different types of tissues work together, they form an organ. There are many organs in the body. How many can you name??

GET IT????


Level four organ systems l.jpg
Level Four: Organ Systems

Each organ in your body is part of an organ system, a group of organs that work together to perform a major function.

For example, your heart is part of your circulatory system, which carries oxygen and other materials throughout your body. Besides the heart, blood vessels are organs that work in your circulatory system.


Slide9 l.jpg

The nervous system detects and interprets information from the environment outside the body and from within the body; controls most body functions.

The immune system fights disease.

The excretory system removes wastes.

The endocrine system controls many body processes by means of chemicals, like hormones.


Slide10 l.jpg

The muscular system enables the body to move; moves food through the digestive system, and keeps the heart beating.

The skeletal system supports and protects the body, and works with the muscular system to allow movement; makes and stores blood cells and stores some other materials.


Slide11 l.jpg

The digestive system takes food into the body, breaks the food down into smaller particles, and absorbs the digested materials.

The respiratory system takes oxygen into the body and eliminates carbon dioxide.

The reproductive system produces sex cells that can unite with other sex cells to create offspring; controls male and female characteristics.


Let s review l.jpg
Let’s Review….

  • 1st Level: Cells working together form

  • 2nd Level: Tissues, which can form

  • 3rd Level: Organs, which work together to form

  • 4th Level: Organ Systems, which work together to form

  • 5th Level: Organisms!


ad