What is the function of a heat exchanger fitted on a gas turbine
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Carbon dioxide production can
Be detected using an indicator. The heat produced by respiration can be
Measured. The lungs are in the thorax
(top part of body, its separated from the lower part by the diaphragm, lungs
Are like big pink sponges and are protected by the ribcage, surrounded by the
Pleural membranes) Breating in
(intercostal muscles and diaphragm contract, thorax volume increases, this
Decresases the pressure, drawing air in)Breathing
Out(intercostal muscles and diaphragm relax, thorax volume increases, air
Is forced out) You can investigate the effect of exercise on breathing rate. Alveoli carry out gas exchange in the body.
(The primary function of the lungs involving the transfer of oxygen from inhaled
Air into the blood and the transfer of carbon dioxide from the blood into the
Exhaled air by diffusion) Alveoli are
Specialised for gas exchange.(they give the lungs a really big surface
Area, they have moist, thin walls (just one cell thick), they have a lot of
Tiny blood vessels called capillaries) Smoking
Tabacco:damages the walls inside alveoli, reducing surface.A for gas
Exchange and leading to dieases, tar irritates the bronchi and bronchioles
Causing the smoker cough and chronic bronchitis, tabacco smoke also contais
Carcinogens, chemicals that lead to cancer. Blood has 4main components (plasma,
Platelets, red blood cells, white blood cells) Plasma is the liquid bit of blood. Platelets are small fragments of
Cells that help blood clot. Red blood cells have the job of carrying oxygen. Your
Immune system deals with pathogens(microorganisms that cause disease)Phagocytes ingest Pathogens(phagocytes
Detect anything foreign to the body)Lymphocytes
Produce antibodies. Blood vessels are desiged for their function. (3types: ARTERIES:
These carry blood away from heart, CAPILLARIES: these are involved in the
Exchange of materials at the tissues, VEINS: these carry the blood to the
Heart)ARTERIES carry blood under
Pressure (heart pumps blood at high pressure so the artery walls are strong
And elastic) CAPILLARIES are really
Small (arteries branch into capillaries, they are really tiny, they carry
Blood really close to every cell in the body to exchange substances with them)VEINS take blood back to the heart(capillaries eventually join up to from veins, the blood is at lower pressure
In the veins so the walls don’t need to be as thick as artery walls) EXERCISE increases heart rate( when
You exercise your muscles need more energy so you respire more)