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Flashcards by Eavan Brennan, updated more than 1 year ago
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| Question | Answer |
| Identify the key functions of blood | - Carries substances e.g. Oxygen/ CO2/ nutrients/ waste / water - Defends against infection through Leukocyctes - Maintainance of the heart (homeostasis) - Protection through injury via platelets |
| List the different types of blood cells | Ethrocyctes (white cells) Thrombocyctes (platelets) Leukocyctes (white cells) |
| Identify 4 main types of blood vessels | Arteries Veins Capillaries Heart |
| Identify the function of atria | The top 2 chambers in the heart which recieve deoxygenated blood (right) and oxygenated (left) blood |
| Identify the function of ventricles | The bottom 2 chambers of the heart that recieves blood from atria. Ventricles push blood up into aorta and pulmonary artery |
| Identify the function of valves | To prevent backflow from happening and to allow blood to move through different areas e.g. atrium to ventricle |
| Describe approx. size of heart | Approx the size of a fist |
| Identify the 3 layers of the heart | Pericardium Myocardium Endocardium |
| Describe 3 layers of heart | Pericardium - Outer layer protecting the heart & provides lubrication Myocardium - Middle layer. Repsonsible for pumping the blood Endocardium - Lines the internal surface of valves & chambers |
| Identify the pulmonary circuit | Takes deoxygenated blood from the body to the heart entering via right atrium & sending blood to lungs for gaseous exchange (Uses right side of body) |
| Identify systematic circuit | Responsible for pumping oxygenated blood around the body to the organs & tissues (Uses left side of body) |
| Identify how the heart muscle is supplied with oxygen and nutrients | The arteries |
| Why is the heart muscle on the left thicker? | As it works at a higher pressure due to having a further distance around the body |
| Identify the types of waves on a ECG | P wave QRS wave T wave |
| Identify the functions of the waves of an ECG | P wave - Impulse from SA node to AV node QRS - Depolarisation of the ventricles, electrical activities of the purkinje fibres T wave - Repolarisation of the ventricles, the ventricles going into diastole & then relax |
| The heart is regulated by which centre? | The cardiovascular system |
| Describe internal respiration | The diffusion or gaseous exchange in which happens when the CO2 is rempved from the capillaries into the lungs where it will be removed via exhaling. |
| Describe short-term BP | Checking the BP at that current moment in time via machine or manually. This can be repeated over a number hours however the reading will be from that moment in time. |
| Describe long-term BP | Monitoring the BP over a long period of time e.g. days. This happens via a machine that is connected and measure the BP at regular intervals to gain an understanding of the overall BP. |
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