The cardiovascular system
- Created by: Anniemay129
- Created on: 18-11-19 17:00
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- The cardiovascular system
- Allows blood to circulate around the body to transport & supply essential nutrients multi-cellular organisms need to survive & maintain homeostasis
- AKA the circulatory system
- Cardiac cycle - a complete heart beat from the generation of the beat to the beginning of the next beat
- The cardiovascular system contains...
- Heart
- Blood vessels
- Blood
- A tissue that always flows through blood vessels
- Responsible for regulating...
- Volume of fluid in circulation
- Body temperature
- pH of body tissues
- Protects us because it has...
- Platelets - cause clotting to prevent bleeding & the entry of pathogens
- leukocytes - defend us against infection
- Made up of erythrocytes, leukocytes, thrombocytes & plasma
- Erythrocytes - red blood cells, contain haemoglobin that transports oxygen around the body
- Leukocytes - white blood cells, there are many different kinds
- Thrombocytes (platelets) - component of blood involved in blood clotting
- Responsible for transporting...
- Oxygen - lungs to body cells (aerobic respiration)
- Carbon dioxide - respiring cells back to lungs (exhalation)
- Urea (waste product) - liver to kidney (urination)
- Nutrients - intestines to body cells
- Heat - respiring tissue to - organs to maintain body temperature/ skin to be lost
- Hormones - endocrine glands to target organs
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