1. Human Body Systems

2. What is a system? A group of cells, tissues and organs that work together both physically and chemically to carry out a task.

3. Assignment System: Give the name Main Job: one sentence description of the job of the system Organs: list main organs

4. Cardiovascular System Transport of materials to and from cells Heart pumps blood Blood vessels carry blood Oxygen is delivered to all cells Carbon dioxide is delivered out of cells Arteries go away from heart and veins go towards heart Sometimes called circulatory system

5. Digestive System Ingestion of food Breakdown of food Elimination of waste (large intestine) Stomach churns (mixes) food Small intestine “digests” food and sends it into the blood

6. Endocrine System Hormonal control of body functioning Hormones are made in GLANDS Growth hormone Adrenalin hormone ADH hormone to control water in body Testosterone and Estrogen

7. Immune System Protects body form microbes Bacteria Virus Fungi Protists White blood cells!

8. Nervous System Send and receive signals to/from the brain Uses five senses (touch, taste, hearing, sight and smell) Integration of all systems Cell = NEURON

9. Neuron Specialized cell in nervous system

10. Respiratory System Provides cells with oxygen Removal of carbon dioxide waste Trachea and bronchial tubes Alveoli are tiny sacs in the lungs where oxygen goes into the blood and carbon dioxide comes out

11. Urinary System Kidneys filter blood Water, salt and urea are taken out of kidney and urine is formed Bladder stores urine