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St Mary’s music scho
S2生物學 term1. Health monitoring and Respiration and homeostasis
| Question | Answer |
|---|---|
| As the heart beats. Where can the pulse be felt | Locations where the artery passes over the bone, like the write, neck and arm |
| Does a fit person have a high or lower resting rate | Lower |
| What is the recover rate | The weight at which the heart rate returns to normal after exercise - The peak heart rate minus the heart rate after one minute |
| What do systolic and diastolic blood pressure values represent? | Systolic: Pressure in the arteries when the heart contracts. Diastolic: Pressure in the arteries when the heart relaxes. |
| 項 | |
| What is high blood pressure known as | Hypertension |
| What is low blood pressure known as | Hypotension |
| What is the formulas of the body mass index | BMI= body mass in kg / height in meters squared |
| What is respiration | The chemical release or energy from the food we eat, enzyme-controlled breakdown of glucose to release energy. |
| What cells need to carry respiration | ALL OF THEM |
| What is aerobic respiration | Now our bodies and other living things use oxygen to turn food into energy |
| What does glucose and oxygen produce | Glucose + oxygen -> carbon dioxide + water + energy |
| What is homeostasis | The maintenance of a constant internal environment despite changes in the surroundings |
| Name some examples of homeostasis | Regulating body temperature, body glucose or water |
| What are the three parts of homeostatic control in our bodies | Effectors, receptors, and the control centre |
| What is the ideal body temperature and name one example what this temperature creates perfect environments for | 37 degrees Celsius, and it creates perfect environment for enzymes |
| What in the skin and the brain detects changes in body temperature | Receptors |
| What brings about the appropriate responses to increase or decrease body temperature | Effectors |
| Name some effectors | Sweat glands, body hairs, thyroid gland |
| Why does sweating decrease temperature | Evaporation of sweat transfer great from the skin to the enviroment |
| What is the control of water levels and mineral salts in the blood called | Osmoregulation |
| Name two ways water leaves the body | Via lungs when we exhale Via kidneys when we urinate |
| What is a hormone that regulates blood glucose concentration and what organ produces the hormone | Insulin; Pancreas |
| What might happen if there’s too much water in body | Damage to cells - they might burst even |
| If the blood level is too high: | The pancreas produces insulin, and the insulin binds to the receptor cells, and the insulin allows glucose to be absorbed, and excess glucose is converted into a storage molecule called glycogen |
| If blood level is too low: | The hormone glucagon is released by the pancreas, glucagon binds to receptors, glucagon instructs the liver to start breaking down the glycogen back into glucose |
| What is vasodilation and what is the opposite of it | Blood vessels become wider (dilate) and the vessel walls come closer to the skin and heat can be lost to the environment Opposite is vasoconstriction, when blood vessels become narrower(constrict), less blood flow goes through the skin;heat stays in body. |
| How does hair standing up increases temperature | It traps a layer of insulation. |
| What else do I need to look at for the full S2 term 1 test | The S1 stuff, the microscope parts, the health monitoring diagram on page 15 of booklet, and the blood glucose diagram on page 20 of the booklet. Also look at my other flash cards, like the circulatory system flash card and the “S2 part 1 card” |
| How do I access other flash cards by sumleung | Scroll to the bottom of the page, click “SumLeung” from the ‘created by SumLeung(date)’ and you will be able to access all public flash cards i made ever |
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Sumleung
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