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Physical Education A
Section A
| Question | Answer |
|---|---|
| What is the total lung capacity? | Total volume of air in lungs following max inspiration, 6dm |
| What is vital capacity? | Max volume of air that can be forcibly expired after max expiration, 4.8dm |
| What is tidal volume? | Volume of air inspired.expried per breath 500mL |
| Average IRV? | 3.6dm |
| Average ERV? | 1.8dm |
| Residual volume? | Volume of air remaining in lungs after max expiration. 100mL |
| What is an isokinetic muscle contraction> | Muscle shortens under tension while producing a movement of a constant speed e.g Breast stroke |
| What is the endocardium? | The inner glistening membrane. It reduces friction between the heart and the blood flow. |
| What occurs during diastole? | Relaxtion phase lasting 0.5 seconds.Both atria fill with blood and the AV valves close Atrial blood pressure raises above ventricular pressure This forces AV valves open. Blood passivly passes into both ventricles. Semilunar valves are closed |
| What occurs during systole? | Contraction phase. Lasts 0.3 seconds. Both atria contract actively forcing remaining blood into ventricles. Semilunar valves remain closed. Both ventricles contract. Aortic and pulmonary valves forced open. AV valves closed. |
| Resting, sub max and max values for Stroke volume? | 70mL 90mL 110mL |
| Resting, sub max and max values for heart rate? | 72bpm 115bpm 220 - age |
| Resting, sub max and max values for cardiac output? | 5L/min 10L/min 30L/min |
| What is the end diastolic volume? | Volume of blood in ventricles at end of relaxation phase |
| What is the end systolic volume? | Volume of blood in ventricles at end of contraction phase. |
| What nerve does the information get send along in the sympathetic nervous system? | Accelerator nerve |
| What nerve does the information get send along in the parasympathetic nervous system? | vagus nerve |
| What are the inspiratory muscles? | External intercostals Diaphragm Sternocleidmastoid scalenes pectorialis minor |
| What are the expriatory muscles? | Internal intercostals abdominals obliques |
| What does the CSA do to blood velocity? | Increase in CSA decreases velocity |
| What is the rest and static pressure in systolic? | 120 - 200 |
| What are the rest and static pressure in dystolic? | 80 - 120 |
| Why is a cool down important? | Mean a continuance of metabolic proccesses to a max. |
| What is tissue respiration? | Process by which cells use oxygen |
| What is pulomary respiration? | Process of supplying air to alveoli which make up ling tissue. |
| What does pleural fluid do? | Lubricates the lungs. Aids breathing - pressure of fluid is lower than the atmospheric pressure therefor pushes pleural membrane towards the throatic cavity hence why the lungs move with the chest during breathing. |
Created by:
Helenaclive
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