1. Animals, Plants and Interdependence
Organ Systems
Animals, Plants and Interdependence

2. Organs?
What is an organ?
Organized group of tissues that performs a specific function.
Atoms
Molecules
Cells
Tissues
Organs
Organ systems
Organisms

3. Animal Organs 4 types of tissues:
epithelial, connective, muscle and nervous
Example: Skin – largest organ in your body
Protects inner cells from damage, acts as defense, insulates, releases heat and excretes wastes
Epidermis is outer layer and acts as protective layer
Epithelial tissue
Dermis is connective tissue, nervous tissue and muscle tissue
Connective – blood and blood vessels, fat for insulation
Nervous – tissue to detect pain, pressure, heat and cold
Muscle - goosebumps

5. Plant Organs 4 types of tissues: Organs in a plant are:
epidermal, ground, vascular and meristematic
Organs in a plant are:
root, leaf, stem and flower or fruit
Example: Leaf – where photosynthesis happens
Vascular tissue – water to and within the leaf, sugar produced to the rest of the plant
Epidermal tissue – holes called stomata facilitate gases
Ground tissue – mesophyll is where photosynthesis happens

7. Animal Organ Systems There are 11 main organ systems in the human body
integumentary, digestive, respiratory, circulatory and excretory
Example: Digestive Organ System
Tube within a tube in which absorption takes place
Small intestine into the bloodstream
Earthworm – food in the mouth, muscular contractions move it to the crop  muscular gizzard  intestines  anus
Fish – teeth to grab prey  stomach  digestion in intestine  anus
Frog – teeth and tongue to grab prey  pressure of swallowing to get food into gullet  esophagus  stomach  intestines  cloaca

8. Animal Organ Systems Integumentary Respiratory Circulatory Excretory
skin (epidermis and dermis)
accessory structures (horns, antlers, hooves, quills, claws and nails
Respiratory
Obtain oxygen and release carbon dioxide
Trachea  bronchus  bronchioles  alveoli  bloodstream
Circulatory
Arteries, arterioles, capillaries, venules, veins, heart, blood
Excretory
Kidneys, ureters, urinary bladder, urethra and skin
Filters waste products from the blood and maintains water and electrolytes

9. Plant Organ Systems Root System and Shoot System
Shoot – everything above the ground
Root – everything below the ground
Example of Interdependence
Water flow
Root pressure
Capillary action
Transpiration pull

10. Homeostasis
Maintaining an internal steady state and organ systems work together to facilitate this
Example of interdependence:
Your circulatory system works to get blood to all parts of your body and the reason is to get oxygen to all cells and wastes away. Additionally, nutrients that have been absorbed by the digestive system are passed to the cells of your body via the circulatory system.

11. Interdependence of Organs
Think of how the following all interact with each other. Provide an example of an activity with an explanation.
Integumentary
Circulatory
Respiratory
Skeletal
Muscular
Nervous

12. Problems With Organ Systems
Circulatory System
Pulse – bpm
Blood pressure – 120/80mm of Hg
Systolic and diastolic pressures
Excretory System
Urine test
Kidneys remove urea, water and other wastes from blood
White blood cells in urine indicate an infection in the excretory system
Too little urine may mean kidneys are not working effectively
Too much urine may mean pancreas is not working effectively
Prescription and illegal drugs as well as performance enhancers