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Biology - 6th Year > Circulatory System > Flashcards

Circulatory System Flashcards

1
Q

Name the two types of systems

A

Open and closed circulatory systems

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2
Q

Open circulation system eg insects

A

Heart pumps blood into vessels that are open ended

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3
Q

Closed circulation system

A

Blood remains in a Continuous system of blood vessels

Eg humans

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4
Q

Advantages of closed c s

A

Blood can be pumped faster

Blood flow rate to different organs can be changed

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5
Q

Three parts of human circulatory system

A

Heart
Blood vessels
Blood

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6
Q

What are the main blood vessels

A

Veins and capillaries

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7
Q

Artie’s carry blood

A

Away from heart

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8
Q

Arteries have

A

Thick elastic walls and a narrow lumen

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9
Q

Veins carry blood

A

Under low pressure towards the heart

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10
Q

Veins have

A

Valves
Thin wall
Wide lumen

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11
Q

Valves prevent

A

Backflow

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12
Q

Artérioles connect

A

Arteries to capillaries

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13
Q

Venules connect

A

Capillaries yo veins

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14
Q

Capillaries connect

A

Arterioles to venules

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15
Q

Capillaries have a thin permeable Wall which

A

Allows easy exchange of materials with cells

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16
Q

Role of muscle

A

Expand to allow increased blood flow through the vessel

17
Q

Role of elastic fiber

A

Bring blood vessel back to shape

18
Q

Name the circuits in the two circuit circulation

A

Systemic and pulmonary circuit

19
Q

Systemic

A

Goes around whole body and back to heart

20
Q

Pulmonary

A

Goes to lungs for oxygen and back to heart

21
Q

Advantages of a double circulation system

A

Separation of oxygen rich and oxygen poor blood

22
Q

Portal system is a

A

Blood pathway that begins and ends in capillaries

23
Q

Portal system does not connect with

A

The heart

24
Q

Hepatic portal vein connects

A

Ileum to liver

25
Q

What go into the lymph system

A

Fats

Biology - 6th Year (21 decks)

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