CV system
- Created by: Georgie2207
- Created on: 29-10-18 15:48
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- Cardiovascular system
- Structure of the Heart
- 3 vessels: Artery, vein, capillary
- 2 atria, 2 ventricle, 1 septum
- Valves prevent back flow of blood
- Cardiac Conduction System
- Cells send impulses to cause contractions
- SAN, Atrial systole, AVN, Bundle of His, Purkinje fibre, Ventricular systole
- Sympathetic/Para control heart beat
- Cardiac Control Centre
- Chemo, Baro, Proprio receptors
- Heart rate must be inc. for pedestrianism as they are playing sport for rewards (for the first time)
- Cardiac Control Centre
- Stroke Volume
- Volume of Blood pumped out of the heart each beat
- STARLINGS Law
- The WC ppls SV would be higher as they do a lot more exercise so hypertrophy would have occurred sooner
- Physical Activity on Health
- Types of Disease
- Heart Disease, High BP, Stroke, Cholesterol
- During industrialisation, there was a large amount of air pollution which would have inc. the chance of diseases such as heart disease
- In pre-industrial Britain, they wouldn't have been able to treat these diseases very well, so exercise was even more important
- Heart Disease, High BP, Stroke, Cholesterol
- Types of Disease
- CV Drift
- Dec. in SV and Aterial BP and a slow inc. in HR
- After 10 mins of warm exercise
- Maintain fluid intake before and during to reduce
- If fluid is maintained, the exercise performed can be for a longer duration, so maximizing improvement
- Vascular system
- Carry O2 and nutrients to tissues and remove waste products
- More O2 required for Mob Sports etc. by the WC because the sports are played at a higher intensity
- Pulmonary and Systemic circulation
- BP = BF x res.
- Carry O2 and nutrients to tissues and remove waste products
- Venous return
- Skeletal, Respiratory pumps and pcoket valves
- Venous return, and ejection fraction must inc.when training
- Skeletal, Respiratory pumps and pcoket valves
- Oxygen
- 3% plasma, 97% Hb
- OxyHb curve
- Bohr Shift -> dec. pH, inc. temp, inc. PCO2
- This would have occurred during industrialisation due to the inc. in fossil fuels in the air, which inc. the PCO2
- Blood flow
- Vascular shunt
- Vasodilation and vasoconstriction
- Pre-capillary sphincters = tiny rings of muscle
- Structure of the Heart
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