Cardiorespiratory system.docx

[Cardiorespiratory system ] Functions: - Rapid transport and disruption of nutrients e.g. glucose, O~2~ and waste product e.g. urea and CO~2~ - Distributes H~2~O, electrolytes and hormones - Exchange between blood vessels and interstitial fluid - Infrastructure of immune system -...

[Cardiorespiratory system ] Functions: - Rapid transport and disruption of nutrients e.g. glucose, O~2~ and waste product e.g. urea and CO~2~ - Distributes H~2~O, electrolytes and hormones - Exchange between blood vessels and interstitial fluid - Infrastructure of immune system - Temperature regulation Circulation of blood: Action Potential Route: 1. SAN 2. AVN 3. Bundle of Hiss 4. Left and Right bundle branches 5. Purkinje fibres [Electrophysiology ] - At SAN Ca^2+^ channels open letting ions in K^+^ is let out via channels - Therefore, action potential is made but decays slowly \* The resting potential is unstable ECGs: P wave -- Atrial depolarisation QRS complex (\