The Circulatory System Flashcards

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1
Q

Closed system means ?

A

Blood stays inside the blood vessels

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2
Q

Open system means ?

A

Blood leaves the blood vessel

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3
Q

Why are close systems better

A

They pump blood around the body faster

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4
Q

What are the 3 types of blood vessels

A

Artery
Vein
Capillary

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5
Q

The characteristics of an artery

A

Thick wall
No valves
High pressure
Oxygenated blood

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6
Q

Characteristics of veins

A

Thin walls
Valves
Deoxygenated blood

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7
Q

What do valves do

A

Prevent back flow

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8
Q

What does the hepatic portal vein connect

A

The liver to the small intestine

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9
Q

How is a heart beat created

A

The valves in the heart closing

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10
Q

How is a pulse created

A

The expansion of an artery caused by pumping of heart

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11
Q

How is blood pressure created

A

Force required to stop blood flow in an artery

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12
Q

Stages of heartbeat

A

Cardiac muscle COntract- SYstole
Cardiac muscle RElax-Diastole

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