Key words
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Organ | A group of tissues working together to perform a function
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| Organ system | A group of organs working together to perform a function
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| Adaptation | The features something has to allow it to do its job or to survive
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| Breathing | The movement of muscles that make the lungs expand and contract
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| Breathing rate | The number of times you inhale and exhale in one minute
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| Breathing system | The organ system that allows the exchange of gases in the lungs
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| Carbon dioxide | The waste gas produced by respiration and makes up 0.04% of the air
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| Cell | The basic unit of life
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| Contract | To get smaller
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| Diaphragm | Organ that contracts to increase the volume of the lung
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| Excretion | Getting rid of waste
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| Exhalation | Breathing out
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| Gas exchange system | See Breathing system
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| Inhalation | Breathing in
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| Oxygen | Makes up 21% of the air
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| Relax | When a muscle stops exerting a force
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| Respiration | The process in which organisms release energy from a substance
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| Ventilation | The movement of air in and out of your lungs
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| Artery | Blood vessel that carries blood away from the heart
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| Vein | Blood vessel that carries blood to the heart
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| Blood vessel | A tube that carries blood in the body
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| Bone marrow | Tissue inside bones that make blood
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| Capillary | Thin walled blood vessel that links arteries and veins
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| Haemoglobin | The substance that carries oxygen in red blood cells
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| Heart chambers | Spaces in the heart that blood moves through
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| Plasma | The liquid part of the blood
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| Pulse | A feeling of the heart beating that can be felt in the arteries
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| Pulse rate | The number of times a pulse can be felt in one minute
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| Red blood cells | Blood cells that carry oxygen
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| White blood cells | Blood cells that fight micro-organisms
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| Backbone | A series of small bones (vertebrae) that form a chain the make the main support of a body
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| Cartilage | A slippery substance used to reduce friction in joints or for flexibility (ear, nose)
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| Fixed joint | Where two bones meet but cannot move
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| Flexible joint | Where two bones meet and can move by the use of muscles
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| Fracture | Break
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| Ligament | Tissue that connects bones
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| Skeleton | All the bones that support an organism (206 in humans)
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| Skull | Collection of bones that protect the brain
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| Tendon | Small bones of the backbone
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| Vertebrae | Small bones of the backbone
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| Antagonistic pair | Two muscles that work a joint by pulling a bone in opposite directions
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| Biomechanics | The study of how muscles and bones work together to move your body
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| Impulse | An electrical signal that travels in the nervous system
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| Locomotor system | Organ system that contains all your muscles and bones that allow you to move
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| Mitochondria | Organelles in cells where respiration occurs
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| Newton | The unit of force (N)
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| Spinal chord | Large bundle of nerves that runs through the vertebrae (backbone)
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| Addictive | Something that makes you feel that you need to have it
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| Caffeine | A stimulant that increases the speed at which nerves carry impulses
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| Cannabis | A drug that can cause memory loss with long-term abuse
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| Cocaine | Powerful stimulant that can block arteries and cause mental problems with long term abuse
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| Depressant | Drug that decreases the speed at which nerves carry impulses
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| Drug | Substance that affects the way your body works
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| Ecstasy | A stimulant that can cause depression, mental illness and even death with long-term abuse
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| Heroin | A dangerous depressant that causes vomiting and severe headaches
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| Impulse | Electrical signal carried by a nerve cell
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| Medicine | A drug that helps the body to ease the symptoms of a disease or cure a disease
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| Nervous system | Brain, spinal cord and all your nerves
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| Reaction time | The time it takes you to respond to a stimulus in the environment
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| Recreational drug | A drug used for its mind-altering effect rather than as a medicine
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| Side-effect | Harmful or unpleasant effects caused by drugs
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| Solvent | A liquid used to dissolve things
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| Solvent misuse | Sniffing solvents used in glue and other things
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| Stimulant | Drug that increase the speed at which nerves carry messages
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| Substance abuse | See Substance misuse
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| Substance misuse | Taking any substance in a way that causes harm to the body
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Or sort by any of the columns using the down arrow next to any column heading.
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