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9. Blood Vessels + Blood Flashcards

(12 cards)

1
Q

Describe arteries

A

Carry oxygen rich blood away from the heart. Have thick elastic walls that expand and contract.

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2
Q

Describe capillaries

A

Smallest blood vessels where the exchange of nutrients and waste between the blood and body cells occur.

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3
Q

Describe veins

A
  • Carry blood back to the heart.
  • Thinner walls than arteries.
  • Have valves and muscles in them that help squeeze the blood back to the heart.
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4
Q

Describe venous pooling

A

Blood pooling in the veins in the legs after exercise. This leads to a slower recovery.

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5
Q

Define vasodilation

A

An increase in the diameter of a blood vessel to allow more blood to flow through

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6
Q

Define vasoconstriction

A

A decrease in the diameter of a blood vessel allowing less blood to flow through

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7
Q

List the 4 components of blood

A

Red blood cells, white blood cells, platelets and plasma

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8
Q

Describe red blood cells

A

They carry 02 around the body. Contain haemoglobin.

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9
Q

Describe the systemic circulation loop

A

When oxygenated blood is transported from the left ventricle to the rest of the body and back to the right atrium

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10
Q

Describe the pulmonary circulation loop

A

When deoxygenated blood is transported from the heart to the lungs and return oxygenated

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11
Q

Define Blood pressure

A

Blood pressure is the pressure on the artery walls.

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12
Q

Compare systolic and diastolic blood pressure

A

Systolic blood pressure is when the heart is contracting where as diastolic blood pressure is when the heart is relaxing.

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