1 / 20

3.2 Organ Systems in Animals

3.2 Organ Systems in Animals. Cells Working Together. Single-celled organisms such as bacteria and yeast can live on their own since they do not depend on any other cells.

awells
Download Presentation

3.2 Organ Systems in Animals

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 3.2 Organ Systems in Animals

  2. Cells Working Together • Single-celled organisms such as bacteria and yeast can live on their own since they do not depend on any other cells. • A single skin or muscle cell, however, would quickly die if it is separated from the larger group of cells as they work as a network of specialized cells.

  3. Level of Organization Hierarchy- levels of organization of increasing or decreasing complexity.

  4. Building up Levels 1. Cells 2. Tissue – group of cells with the same structure and function Ex: muscle, bone, blood, skin, nerve 3. Organ – group of two or more types of tissue that perform a specific task. Ex: stomach, heart 4. Organ system – group of organs that work together for a vital body function Ex: Nervous system • 5. Organism – a living thing. Ex humans

  5. Organ Systems Anatomy – The structure of living things Physiology- The function of living things

  6. Tissue – A group of cells that work together to perform a specific task. Organ – A structure composed of different tissues specialized to carry out a specific function. (i.e. stomach, heart, kidneys) Organ System- A group of organs that have a related function.

  7. ORGAN SYTEMS

  8. ORGAN SYTEMS (continued)

  9. Organs Breaking down food occurs with tissues acting together. Stomach tissues include: • Muscle cells • Nerve cells • Blood cells • Outer/inner lining • Cells that excrete enzymes • Acid and mucus

  10. Animal Tissues • 4 major types: • Epithelial Tissues • Connective Tissues • Nerve Tissues • Muscle Tissues Provide: covering, connections and support Sensing and responding

  11. Epithelial tissue • Sheets of tightly packed cells used for lining or protection of body’s internal organs and cavities • Examples: • Skin (made of several layers) –greater protection • Lung air sacs (made of one layer) –less protection

  12. Connective Tissue Connective Tissues- made up of both specialized cells and non-living materials that supports, protects and connect the body’s organs. • Different types of cells held • together by a liquid or solid matrix • Examples: • bone • ligament • cartilage • tendons

  13. A torn ACL (ligament holding the knee joint together)

  14. Nerve Tissue • Nerve Tissues- very complex long, thin cells that can conduct electrical impulses. • Examples: • Nerve • Brain • Spinal cord • The signals between the body and the brain happen very fast.

  15. 3 Kinds of Nerve Cells Sensory Neurons – carries information from the body to the brain or spinal cord (info about the outside world) 2. Motor Neurons – carries instructions from the brain or spinal cord to another part of the body, usually muscles. 3. Interneurons- connects the sensory and motor neurons (brain and spinal cord are made of these)

  16. If your hand gets close to a hot surface, you pull your hand away. This is because your body can feel since your skin contains millions of nerve cells.

  17. Muscle Tissue • Muscle tissues- bundles of long specialized tissues cells that can shorten or contract. • Allows movement and enables organs to function • 3 types of muscle tissues: • Striated (voluntary) • Smooth (involuntary) -lines the walls of organs, veins, arteries • Cardiac (involuntary) – lines the walls of the heart

More Related