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Bonew > Heart > Flashcards

Heart Flashcards

1
Q

What is the location of the heart

A

Just left of centre

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2
Q

What is a function of the heart

A

To pump blood

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3
Q

What is circulated by the heart and used for functions

A

Oxygen

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4
Q

How many pumping chambers does the heart have ?

A

Two

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5
Q

What is the name of the upper chambers of the heart

A

Atrium

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6
Q

What is the name of the bottom chambers of the heart

A

Ventricles

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7
Q

What half receives blood from the body and pumps blood to the lungs

A

The right

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8
Q

What does the circulatory system consist of

A

Heart
Blood
Blood vessels

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9
Q

What is the hearts pace maker

A

The sinoatrial node

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10
Q

Where is the sa node located ?

A

In the wall of the right atrium

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11
Q

How many times does the myocardium contract

A

72 bpm

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12
Q

What does the aorta do?

A

Oxygen rich bloody to the body

Located at top of heart

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13
Q

What does the pulmonary artery do ?

A

Oxygen poor blood to the lungs

Located on the top left of heart

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14
Q

What does the pulmonary vein do

A

Oxygen rich blood from the lungs

Located below pulmonary artery on the left hand side of heart

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15
Q

What does the vena cava do

A

Take oxygen poor blood from the body

Located on right hand side of heart

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16
Q

What prevents the flow of blood back into the atria during ventricular contraction

A

The atrioventricular valve

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17
Q

What prevents the flow of blood back into the right and left ventricles during ventricle contraction

A

The semilunar valve

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18
Q

What is the ventricle contraction called

A

Systole

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19
Q

What is the ventricular relaxation called

A

Diastole

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20
Q

What are systole and diastol measurements of ?

A

Blood pressure

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21
Q

The pumping and contracting phase of the cardiac cycle

A

Systole

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22
Q

The relaxing resting phase of the cardiac cycle

A

Diastole

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23
Q

What is systemic circulation between?

A

The heart and the body

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24
Q

What are the systemic heart chambers

A

The left ventricle and right atrium

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25
Q

What is the systemic blood vessels

A

The aorta

The inferior and superior vena cava

26
Q

What carry’s blood from the lower body

A

The inferior vena cava

27
Q

What carry’s blood from the upper body

A

The superior vena cava

28
Q

What is dark red in colour

A

Deoxygenated blood

29
Q

What colour is oxygenated blood

A

Red

30
Q

What is happening when the blood vessels narrow

A

Vasoconstriction

31
Q

Which blood vessel has the thickest muscular walls and carry blood under high pressure

A

Arteries

32
Q

What blood pressure reading 120 /80 be classified ?

A

Optimal

33
Q

What are the 4 components in the blood vessels

A

Red
White
Platelets
Plasma

34
Q

What does red blood cells do?

A

Carry oxygen

35
Q

What do white blood cells do

A

Fight infection and destroy bacteria

36
Q

Where do white blood cells produce

A

Red bone marrow

37
Q

What cells assist in preventing blood loss

And help blood clotting

A

Platelets

38
Q

What does plasma consist of

A

Water 91.5%

Solutes 8.5

39
Q

What are arteries

A

Muscleluar thick walls

They contract and squeeze blood along the passageways away from heart

40
Q

What is the large artery?

A

Aorta

41
Q

Are there valves in the arteries

A

No

42
Q

What carry’s deoxgyenated blood to the lungs

A

Pulmonary arteries and artiolies

43
Q

What are extremely thin walls

A

Capillaries

44
Q

What happens after the capillaries have passed the tissue ?

A

Form larger blood vessels called venules

45
Q

Structure of blood vessels

A

Capillaries
Venules
Veins
Vena cava

46
Q

What is the job of veins

A

Carrying blood from the tissues and back towards the heart

47
Q

What do veins carry

A

Deoxygenated blood

48
Q

What is blood vessels narrow

A

Vasoconstriction

49
Q

What is blood vessels widen

A

Vasodilation

50
Q

Where does the heart receive oxgygenated blood from

A

Pulmonary vein

Ocgygen rich blood from the lungs

51
Q

Where does the heart pump deoxygenated blood to ?

A

To the lungs with the pulmonary artery

52
Q

How many chambers does the heart have

A

4

53
Q

Which chambers of the heart receive blood

A

Atrium

54
Q

Which chambers of the heart pump blood

A

Ventricles

55
Q

Largest vein entering the heart

A

Vena cava

56
Q

What is oxygenated blood

A

Pulmonary vein
Left atrium
Left ventricle
Aorta

57
Q

What is deoxygenated blood

A

Pulmonary artery
Right ventricle
Right atrium
Vena cava

58
Q

What is blood pooling

A

Occurs in the veins pools in the extremities

Stopping suddenly during intense exercise

59
Q

What is venous return

A

Helping the return flow of blood to the heart and preventing blood pooling

60
Q

How is blood pressure measured

A

Cardiac output x total pheriihal resistance

61
Q

What is vasoconstriction

A

Blood vessels narrow

62
Q

What is vasodilation

A

Blood vessels widen

Bonew (17 decks)

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