The Cardiovascular and Respiratory system

What does the double circulatory system involve?
Heart, blood vessels and blood
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Define the double circulatory system:
Blood in the body continually flows through a network of blood vessels that forms a double circuit. The circuit connects the heart to the lungs and then the heart to the other organs in the body.
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What does the double circuit involve?
Pulmonary and Systemic circulation
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What is the heart function in the double circulatory system?
To acts a a pump
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What does the pulmonary circuit carry?
Heart- Lungs- Heart
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What does the systemic circuit carry?
Heart- Body- Heart
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What are the 3 different types of blood vessels?
Arteries (travel Away from the heart), Veins (Visit the heart), Capillaries (transfer of oxygen and other nutrients from the bloodstream to other tissues in the body)
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Describe an artery?
Arteries carry blood under high pressure, travel away from the heart, no valves, mainly oxygenated and walls are thick and elastic
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Describe an vein:
Has valves to stop back flow from the tissue, transport deoxygenated blood, walls are thin, carry blood to the heart, veins have low pressure and large lumen
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Describe an capillary:
No valves, carries both oxygenated (arrives) and deoxygenated blood, carries blood to and from the tissue and one cell thick- walls are thin
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Define heart rate:
The number of times the heart beats per minute (bpm)
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Define stroke volume:
The amount of blood pumped out the heart with each beat (liters per minute)
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Define cardiac output:
The amount of blood pumped out of the heart per minute (liters per minute)
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What is the equation to work out cardiac output?
Cardiac Output= heart rate x stoke volume
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How do you calculate someone stroke volume?
Stoke volume= cardiac output/ heart rate
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How do you calculate someone heart rate?
Heart rate= cardiac output/ stroke volume
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How do you calculate someone maximum heart rate?
MHR= 220- age
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What happens to our heart rate when we exercise?
Increases- because the muscle require more oxygen and nutrients which are carried to the muscle by blood
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What is the average heart beat?
75 bpm
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A decrease heart rate is a ...
good indicator of fitness
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What is the role of a red blood cell?
Carry oxygen from the lungs to the muscle and removes CO2 from muscles to lungs
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Describe a red blood cell:
Contain a red colored compound called hemoglobin. They have a biconcave shape
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Other cards in this set

Card 2

Front

Define the double circulatory system:

Back

Blood in the body continually flows through a network of blood vessels that forms a double circuit. The circuit connects the heart to the lungs and then the heart to the other organs in the body.

Card 3

Front

What does the double circuit involve?

Back

Preview of the front of card 3

Card 4

Front

What is the heart function in the double circulatory system?

Back

Preview of the front of card 4

Card 5

Front

What does the pulmonary circuit carry?

Back

Preview of the front of card 5
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