5110082
Description
Flashcards by Francesca Wilson, updated more than 1 year ago
|
Created by Francesca Wilson
over 8 years ago
|
|
| Question | Answer |
| Structure of the Heart | |
| Single Circulatory System | Blood only passes through heart once |
| Double Circulatory System | Blood passes through heart twice |
| Atrio-Ventricular Valves | Link atria to ventricles |
| Semi-Lunar Valves | Link Ventricles to the pulmonary artery and aorta |
| Hydrostatic Pressure | Pressure created by a fluid pushing against the side of a container arteries/ capillaries |
| Cardiac Cycle | Ongoing sequence of contraction and relaxation of atria and ventricles that keeps blood continuously circulating around the body. |
| Systole | Cardiac Concentration |
| Diastole | Cardiac Relaxation |
| ECG | Electrocardiogram. Graph showing the electrical activity of the heart muscle during a cycle |
| Electrocardiograph | Machine which records the electrical activity of the heart by tracking changes in electrical charge using electrodes placed on the chest - depolarises and repolarises |
| Electrocardiogram (ECG) | Trace produced by electrocardiograph |
| P Wave | Caused by contraction (depolarisation) of atria |
| Depolarisation | Losing electrical charge - contraction |
| Repolarisation | Regaining charge - relaxation |
| QRS Complex | Main peak of heartbeat contraction (depolarisation) of ventricles |
| T wave | Relaxation (repolarisation) of ventricles |
| What is blood made up of? | - Red blood cells - White blood cells - Platelets - Plasma |
| How does the blood clot at/to form an open wound? | Fibrinogin forms a web (scab) when exposed to air to protect the cut to protect the red blood cells from escaping. |
Want to create your own Flashcards for free with GoConqr? Learn more.