Exercise Flashcards
(13 cards)
What do we need for exercise
Bodies need energy for exercise
Muscles need oxygen so heart beats faster
Aerobic exercise
Easy enough to get oxygen e.g. Walking running
Heart attack is what
Blood vessels to heart are blocked
Heart muscles die from lack of oxygen
Beta blockers are drugs to slow heart so it needs less oxygen
Mountain air has less oxygen so no good for Beta blockers
Measure lung capacity by blowing ink on squared paper
Lung problems
- Microbes - one cell organisms cause infection and damage
- Goblet - cells produce mucus to trap microbes
- Tracheitis - inflammation of trachea causes wheezing and needs antibiotics
- Pleural membranes line chest cavity and cover the lung
- Asthma - muscles in lung tube wall ( bronchioles) contract. Need inhaler to relax muscles and widens tubes
- laryngitis- larynx (voice box) swollen causes speaking problems and needs antibiotics
- bronchitis- bronchial tubes inflame cause cough needs cough syrup
- Pleurisy - inflamed pleural membrane causes chest pain needs antibiotics
- Lung cancer - abnormal cell growth - tumour - blocks airways - cough blood. Needs chemotherapy but can spread to rest of body.
- Tuberculosis- microbes destroy lung tissue. Fever, weight loss, cough blood. Antibiotics needed.
- Smoking - blacken lungs cause 84% death - stop smoking
What is anaerobic respiration
Glucose -> lactic acid + energy
Lactic acid caused by energy e.g. Swimming
How does oxygen breakdown lactic acid
Lactic acid + oxygen -> carbon dioxide plus water
This is recovery time
Key facts 1-4
- Digested food provides energy
- Respiration is the process releasing energy in our bodies
- Living cells produce carbon dioxide - turns limewater milky
- Oxygen + glucose -> carbon dioxide + water
Key facts 5-8
5 heart and blood vessels make up circulatory system
- One pulse beat for each heart beat
- Smallest blood vessels called capillaries
- Heart has 2 halves. One pumps blood to lungs. Other to rest of body
Key facts 9-12
- Exercise makes breathing and pulse rate go up
- When blood carries more oxygen then muscle does not die.
- Carbon dioxide is carried in the plasma.
- When you exercise you need more oxygen
Key facts 13. -16
- Oxygen into blood by tracheal - bronchus - airsac - alveoli
- Breathing is air moving in and out of lungs
- Mucus is moved out of lungs by tiny hairs called cilla
- Exhalation is breathing out.
Key facts 17-20
- Use lime water to test carbon dioxide
18 air around you contains more oxygen and water vapour than air in your lungs.
18 fish use gills to take oxygen out of water
What happens when you exercise?
Your breathing rate and pulse rate increase.
Your cells need more oxygen and glucose for respiration
What do we feel if there is not enough oxygen.
Mountain air has less oxygen and lung infections restrict oxygen.
The cells start to die.
You feel out of breath and tired
