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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Name some systems of the human body? Digestive Muscular Circulatory Nervous Respiratory answer Name A B C and D? answer A C a) Windpipe B b) Bronchi c) Bronchiole D d) Tiny air sac Why do we need lungs? Describe what happens in them with gases. answer Air Sac Capillary Oxygen from the air goes into the blood Carbon dioxide waste the blood S Casey Int1leaves Biology What does exercise do to the lungs and breathing? answer • Increases breathing rate (faster) • Deeper breathing (deeper) • Increases gas exchange in the lungs What do you call the time taken for your breathing rate and depth to return to normal after exercise? answer Recovery time What will a fit persons recovery time be? answer Short List some health issues caused by smoking? answer 1. Tar in cigarette can cause cancer 2. Smoking increases heart disease 3. Pregnant – damage baby 4. Carbon monoxide reduces blood’s ability to carry oxygen Link up the food groups to their importance? answer Fats Body building and repair Carbohydrates Proteins Protection from disease Vitamins and minerals Energy giving S Casey Int1 Biology What is the normal human body temperature? answer 37 oC List some diseases that being overweight can lead to. answer a) Heart disease b) Diabetes c) Arthritis d) Kidney disease How can we maintain the size and strength of our muscles? answer Regular exercise What is reaction time and how can it be improved? What factors affect it? answer •The time taken to respond to a stimulus •Improve it be practicing •Alcohol, drugs and excitement affect it How is alcohol carried around the body? How does alcohol affect you in a) short term b) long term Carried around in the blood answer Short term: Slow reaction time, poor muscle control, poor judgement Long term: Liver problems and brain damage Name The gas moving INTO the red blood cells during gas exchange I answer J OXYGEN Name the gas moving from the blood into the alveoli answer Carbon dioxide (CO2) What changes take place during inhalation – what happens when we breathe in? Ribs – up and out Diaphragm Down answer The Diaphragm moves down, the rib cage moves up and out and the lungs fill with air Is the function of the rings of cartilage in the airways? answer To keep the air passages open To prevent the air passages from closing. List the features of the lungs that make them efficient organs of gas exchange answer • Lots of alveoli • Lots of blood vessels round each alveolus • Walls of the alveoli are very thin • Alveoli are moist inside so oxygen can dissolve in the moisture. This makes it easier to then pass through. Name the heart chambers labelled answer Right Atrium Right Ventricle Left Atrium Left Ventricle What is the function of the valves in the heart Answer Prevent back flow of blood Keep the blood flowing in the correct direction through the heart Which side of the heart has thicker muscle and Why? answer The left side as it has to pump blood to all parts of the body the right pumps blood only to the lungs Name the blood vessels labelled Aorta Pulmonary Artery answer Name the type of blood vessels shown. answer Vein Where are capillaries found? answer At the body cells Describe how the structure of capillaries suit their function? answer They are only one cell thick so substances can pass though into the body cells (and waste from the body cells back into the blood) Name the parts of the brain labelled Cerebrum Medulla A answer C BCerebellum Medulla Controls breathing rate and heartbeat What is the function of the labelled parts answer Cerebrum Conscious thought (reasoning and learning) Cerebellum Controls balance and coordination of movement What is a reflex action answer A fast automatic response to protect the body from harm (Knee jerk) Name teeth A, B, C and D? answer A B CD A Incisor B Canine C Premolar D Molar mmcl2003 Caring for your teeth answer •Regular brushing - Teeth can decay when bacteria in the mouth produce plaque acids which dissolves the hard enamel surface of the teeth. Have regular check-ups - Visit your dentist at least once a year. Cut down on sugary snacks - Eating lots of sugar and starch, plus acidic foods and drinks can cause tooth decay. Bacteria in the mouth use bits of food to produce plaque acid, which attack the teeth. Label the parts of a tooth answer Enamel Dentine Pulp Nerve and blood vessels