1. Human Biology and Health

2. Human Biology and Health 1.1 Word Attack Cell Membrane Cytoplasm Organism Nucleus Muscle Nerve Connective Epithelial Tissue Organ System Function Organization Structure Skeletal Circulatory Respiratory Immune Nervous

3. Human Biology and Health 1.1 Vocabulary Cells – Basic unit of structure and function in living things. ◦ Smallest unit of organization Membrane – Forms the boundary of the cell. Nucleus – Control center that directs the cell’s activities. Cytoplasm – Jellylike substance between the membrane and nucleus where all the organelles may be found.

4. Note Taking  Cells make up tissue. MEN C DRINCS This memory peg will help you remember the tissues and systems in our body. MEN C = Tissues DRINCS = Systems

5. MEN C DRINCS  Muscle Tissue – Carries out movement  Epithelial Tissue – Covers the surfaces of your body, inside and out.  Skin and the lining of the digestive system.  Nerve Tissue – Carries messages back and forth between the brain and other parts of the body.  Brain, spinal cord, and nerves  Connective Tissue – Supports the body and connects all its parts.  Blood, fat, cartilage, bones, or tendons

6. Note Taking  Tissue makes up organs. Organs ◦ Made up of different kinds of tissue. ◦ Performs a specific job. ◦ Heart, lungs, kidneys, liver, skin

7. Note Taking  Organs makes up systems. System – Group of organs that work together to perform a major function.

8. MEN C DRINCS  Digestive – takes in food and breaks it down.  Respiratory – takes in oxygen.  Immune – fights disease.  Nervous – detects and interprets information.  Circulatory – carries materials to and from body cells.  Skeletal – supports the body and works with muscle to allow movement.

9. CELL TISSUE ORGAN SYSTEM

10. Human Biology and Health 1.2 Word Attack Breathing Startle Homeostasis Environment Maintain Adrenaline Energy Stress Fight-or-Flight Stressor Perspiration

11. Human Biology and Health 1.2 Vocabulary Homeostasis – The process by which an organism’s internal environment is kept stable in spite of changes in the external environment. ◦ Example – Body’s return to normal after a scare.

12. Human Biology and Health 1.2 Vocabulary Stress – Reaction of your body and mind to threatening, challenging, or disturbing events. ◦ More blood goes to the brain. ◦ Hearing ability increases. ◦ Sweating increases. ◦ Heart rate increases. ◦ Digestive system slows. ◦ Pupils of eyes widen to take in more light. ◦ Muscles tense. ◦ Body cells release energy faster.

13. Adrenaline ◦ Chemical in the body that is released during the alarm stage in your body’s physical response to stress. ◦ Gives you a burst of energy. ◦ Prepares you to take quick action Human Biology and Health 1.2 Vocabulary

14. Fight-or-Flight ◦ Another physical response to stress. ◦ Caused by adrenaline. ◦ Prepares you to fight the stressor or to take flight and escape. Human Biology and Health 1.2 Vocabulary