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Biology Y7
Cells/Body Systems
| Term | Definition |
|---|---|
| Tissue | a multicellular organism / group of specialised cells that all have similar jobs/functions |
| Organ | a group of cells and tissues that is made for a specific job/purpose |
| Circulatory/cardiovascular system | the group of organs in our body that allows oxygen, carbon dioxide, nutrients and hormones get to our cells through blood flow |
| Digestive system | the group of organs that allows food to be broken down and digested into useful nutrients for our body |
| Nervous system | the system that allows nerves to travel around our bodies to deliver information to our brain and vice versa |
| A system | a group of organs that work together to do a job inside our bodies |
| Skeletal System | Protects and supports body organs and provides a framework the muscles use to support movement. Made up of bones and joints |
| Organisation | Cells-tissue-organ-organ system- organism |
| Breathing in | Lungs go up and out Diaphragm goes down Chest volume increase |
| Breathing out | Lungs go down and in Diaphragm goes up Chest volume decreases |
| examples of hinge joints | elbow and knee |
| Example of ball-and-socket joints | hip and shoulder |
| Example of fixed joints | skull |
| Bending arm | biceps contract, triceps relax |
| Relaxing arm | Biceps relax, triceps contract |
| Muscular System | Allows movement for contracting |
| Endocrine System | Regulates body activities using hormones |
| Immune Stystem | Fight off foreign invaders in the body |
| Integumentary Systems | Produces vitamin D and remove excretory waste |
| lymphatic system | Collets excess fluid |
| Reprouductive System | Allows organisms to reproduce |
| digestive system | Takes in food,digest it and removes unwanted waste |
| circulatory system | Transports materials to and from cells |
| nervous system | Gather and interprets information |
| exretory system | Removes waste and maintains water balance in the body. |
| respiratory system | Brings oxygen into the body. Gets rid of carbon dioxide. |
| What are the seven essential life processes | Movment , Respiration, Sensitivity, Growth, |
| Reproduction, | |
| Excretion and Nutrition | |
| Why do we have a skeleton | To support the body and protect vital organs and help the body move |
| One feature of a synovial joints | freely movable joints |
| What are the bones attached by to the skeleton | Ligaments |
| How are bones connected to the muscles | By tendons |
| What can't muscles do and can do | It can not push but can pull |
| How does oxygen travel from the air into our blood | Enters nose then moves down trachea and then moves down bronchus and then moves through bronchiole, moves into alveolus, then oxygen diffuses into blood |
| How can lung volume be reduced | Smoking ,asthma, old age |
Created by:
Hermoine14Granger
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