Cardiac And Respiratory System Flashcards
What is the function of the arteries?
The arteries have thick, elastic, muscular walls that carry oxygen rich blood away from the heart to the body
What is the function of the capillaries?
Capillaries have very thin walls and are the site of exchange of nutrients and wastes between blood and body cells. Heat from the cells are also absorbed in the capillaries
What is the function of veins?
Veins are thin and not as elastic as arteries and they generally carry blood with low oxygen content towards the heart. Veins have one way valves which prevent blood flowing backwards away from the heart.
What is haemoglobin?
Haemoglobin is the substance in red blood cells which oxygen attaches to. Haemoglobin carries oxygen to the bodies cells. If we have more haemoglobin we can do more work
What are the three types of blood vessels?
Arteries
Capillaries
Veins
What are the functions of the circulatory system?
Circulates blood to all parts of the body
Transports water, oxygen and nutrients to cells
Helps maintain correct body temperature
Helps fight disease through white blood cells and antibodies in the blood
Transports wastes, including carbon dioxide away from the cells
What factors affect resting heart rate?
Gender- males usually have lower resting heart rates then females
Eating- heart rate is raised after meals
Temperature- as air temperature increases heart rate increases
Laughing- heart rate increases
What are the functions of coronary arteries?
Coronary arteries branch across the outer surface of the heart and feed all four chamber walls with nutrients.
What are the functions of the respiratory system?
Brings air from the atmosphere to the lungs
Transfers oxygen into the blood
Removes carbon dioxide from the blood
Expel heat and water vapor in the air breathed out
Allows vocal chords to create speech as air is breathed out
What are the structures of the respiratory system?
The lungs
The diaphragm
The conducting system/ the air passages
What is inspiration and expiration?
Inspiration - breathing in
Expiration - breathing out
What are triggers for asthma?
Cigarette smoke
Cold air or changes in weather
Some medication
Viral infections
Allergy triggers eg. Dust mites, pollen & pets
Work related trigger eg. wood dust & chemicals
Why is it important to exercise with asthma?
It is important to exercise with asthma becuase:
It is part of the asthma plan
Improves health and well being
Asthmatic people can still exercise to full potential if managed
Keeps everyone healthy
What is alveoli and it’s function?
Alveoli is the microscopic air sacs at the end of the respiratory bronchioles, in the lungs. This is where oxygen is exchanged for carbon dioxide in the blood.
