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Biology > THE MAMMALIAN HEART > Flashcards

THE MAMMALIAN HEART Flashcards

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1
Q

How much chambers does the heart have?

A

4 chambers

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2
Q

Name all the chambers of the heart?

A

RA,RV,LA,LV

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3
Q

What does the right side of the heart do?

A

Receives deoxygenated blood then pumps it to the lungs

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4
Q

What does the left side of the heart do?

A

Receives oxygenated blood from the lungs then pumps it to the body

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5
Q

What does the RA of the heart do?

A

The RA receives deoxygenated blood from the body through the VENA CAVA

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6
Q

Vena cava

A

Pumps DEoxygenated blood from the body into the RA

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7
Q

What does the RV of the heart do?

A

The DEoxygenated blood moves from the RA into the RV which then pumps blood to the lungs through the PULMONARY ARTERY

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8
Q

What happens in the LA of the heart?

A

The LA of the heart receives oxygenated blood from the lungs through the PULMONARY VEIN

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9
Q

What happens in the LV?

A

Blood moves from the LA into the LV which pumps blood to the the whole body through the AORTA

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10
Q

What does the RA, RV stand for?

A

Right and left atrium

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11
Q

What is the largest vein in the human body?

A

Vena cava

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12
Q

What is the largest artery in the human body?

A

Aorta

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13
Q

What word is always related or in reference to the lungs?

A

PULMONARY

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14
Q

What blood vessel pumps blood to the lungs?

A

PULMONARY ARTERY

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15
Q

What blood vessel pumps blood from the lungs to the LA?

A

PULMONARY VEIN

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16
Q

Does the atria or the ventricles have thick walls?

A

The ventricles have thicker walls than the atria

17
Q

Why do the ventricles have thicker walls than the atria ?

A

They pump blood further and out of the heart, to the organs =so they need muscles to withstand the high pressure =of the blood moving towards the body

18
Q

Does the RV or the LV have thick muscles?

A

The LV have thicker muscles than the RV

19
Q

Why does the LV have thicker muscles than the RV?

A

Because the LV has to pump blood around the WHOLE body at HIGH PRESSURE,to all of the organs/tissue wheras the RV only has to pump to the lungs which is close to the heart

20
Q

What is the role of the valves?

A

Prevent back-flow of blood into the heart

21
Q

What valve is in the left side of the heart?

A

The biscuspid valve sitting between the left atrium and the left ventricle.

22
Q

What valves are in the right side of the heart?

A

The tricuspid valve

23
Q

Where in the heart is the tricuspid valve situated?

A

Between the RA and RV of the heart

24
Q

Where is the semi lunar valve on the right side of the heart located?

A

Between the pulmonary artery and the right ventricle.

25
Q

Where is the semi lunar valve on the left side of the heart located?

A

Between the aorta and the left ventricle,

Biology (45 decks)

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