9B Keywords

Question	Answer
Night-blindness	Deficiency disease caused by lack of Vitamin A. You cannot see very well in dim light.
Anemia	Deficiency disease caused by lack of iron. Causes tiredness and shortness of breath.
Rickets	Deficiency disease caused by lack of calcium. It causes weak and poorly shaped bones.
Drug	Substance that affects the way your body works.
Medicine	A drug that helps the body to ease the symptoms of a disease or cure the disease.
Side-effect	Harmful or unpleasant effects caused by a drug.
Addictive	If something makes you feel that you need to have more of the substance this is said to be addictive.
Recreational Drug	Any drug used for its mind-altering effect rather than as a medicine.
Caffeine	A stimulant that increase the speed at which nerves carry impulses. Found in coffee, tea and cola drinks.
Cannabis	A drug that can cause memory loss.
Ecstasy	A stimulant that can cause depression, mental illness and even death.
Cocaine	Very powerful and harmful stimulant that causes blocked arteries and mental problems.
Herion	A very dangerous depressant drug. Cause vomiting and serve headaches.
Skeleton	All the bones in the body of a vertebrae.
Skull	Collection of bones that protect your brain.
Vertebra	Your 'backbone' is made of many bone called vertebrae.
Backbone	The series of small bones that provide the main support for the bodies of humans and other vertebrates.
Biceps	Muscle at the front of the upper arm that can contract and move the lower arm upwards.
Joints	Part of the body where bones are moved by muscles.
Contract	When a muscle becomes fatter and shorter.
Relax	When a muscle stops contracting and becomes thinner and longer, it relaxes.
Antagonistic Pairs	Two muscles that work a joint by pulling in opposite directions, e.g. biceps and triceps.
Triceps	Muscle at the back of the upper arm that can contract and move the lower arm downwards.
Strength	How strong your body is.
Stamina	How long your body can exercise for.
Speed	How fast something is moving. Often measured in meters per second (m/s), miles per hour (mph) or kilometres per hour (km/h).
Organ Systems	Collection of organs working together to do an important job.
Circulatory	Organ system containing the heart and blood vessels
Digestive System	The group of organs that carries out digestion.
Respiratory System	Made up of the trachea, bronchi and lungs. Gets oxygen into the blood and takes carbon dioxide out of the body.
Aerobic Respiration	Process that uses up oxygen to release energy from food. Carbon dioxide is produced as a waste gas.
Social Behaviour	How an animal communicates with or reacts other animals of the same species.
Stroke	When the nerve tissue in the brain starts to die because too little blood is getting to it.
Heart Attack	When the heart muscles start to die because too little blood is getting to them.
Fitness	If you are able to do all the things that your lifestyle needs you to do, you are fit.
Balanced Diet	Eating a variety of foods to provide all the things the body needs.
Anorexia	Disease in which someone else too little and becomes dangerously thin.
Deficiency Disease	A disease caused by a lack of a mineral or vitamin.
Nutrient	A part of your food that is used as a raw material (fat, carbohydrate, protein, vitamins, minerals).
Kwashiorkor	Deficiency disease caused by lack of protein.
Scurvy	Deficiency disease caused by lack of Vitamin C. The gums bleed and cuts take a long time to heal.
Heartbeats Rate	The number of times the heart beats in one minute.
Ciliated Epithelial Cells	Cells in the tubes leading to the lungs that have microscopic hairs, cilia, growing from them.
Gas Exchange	Process where oxygen diffuses into the blood and carbon dioxide diffuses out of the blood. It happens in the alveoli in the lungs.
Diaphragm	Sheet of muscle underneath the lungs. It helps to work the lungs during breathing.
Breathing	Moving muscles to make air flow into and out of the lungs.
Ventilation	The movement of air into and out of the lungs.
Nicotine	Poisons, addictive drug found in cigarettes.
Premature	A baby that is born too early and small is said to be premature.
Tar	A poisonous, black, sticky substance found in cigarette smoke.
Lung Cancer	A disease when cells in the lungs start to divide and grow uncontrollably.
S-factors	Four factors that describe how fit you are: Suppleness, Strength, Stamina and Speed
Suppleness	How easily your body can bend and twist.

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	Created by Joshua Bastow over 11 years ago