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Biology 12: Circulatory System > Across > Flashcards

Across Flashcards

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1
Q

One of the layers found in arteries which allows them to construct or dilate

A

Smooth muscle

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2
Q

Larger blood vessels which carry blood back to heart

A

Veins

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3
Q

Main part of heart (mostly muscle)

A

Myocardium

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4
Q

The chamber of the heart which receives blood from rest of body

A

Right atrium

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5
Q

Smaller vessels that carry blood away from the heart

A

Arterioles

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6
Q

Receives blood returning from the lungs

A

Left atrium

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7
Q

Large vessels that carry blood away from heart

A

Arteries

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8
Q

The sound made by the heart valves during atrial contraction

A

Lub

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9
Q

Oxygenated blood is found on which side of the heart

A

Left

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10
Q

Contractions in these muscles helps to push blood through the veins and back to heart

A

Skeletal

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11
Q

Receives a signal from the SA node and initiates ventricular contraction

A

AV node

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12
Q

The heart is able to beat without control of the brain- therefore, heartbeat is said to be

A

Intrinsic

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13
Q

Relaxation of the heart muscle- lowest arterial blood pressure

A

Diastole

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14
Q

Largest artery

A

Aorta

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15
Q

Membrane which surrounds heart

A

Pericardium

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16
Q

Smaller blood vessels which carry blood back to the heart

A

Venules

17
Q

The pulmonary arteries carry blood to

A

Lungs

18
Q

Occurs on the right side of heart

A

Pulmonary circulation

19
Q

Takes blood from small intestines to liver

A

Heptic Portal vein

20
Q

Returns blood from the parts of the body that are below the heart

A

Inferior vena cava

21
Q

The percentage of blood in the arteries at any one time

A

Twenty

22
Q

The most muscular of the heart chambers

A

Left ventricle

23
Q

Take blood to and from kidneys

A

Renal arteries and veins

24
Q

Separates the right atrium and ventricle

A

Right atrioventricular valve

Biology 12: Circulatory System (2 decks)

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