Heart Flashcards

(62 cards)

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
What is the systemic blood vessels
The aorta | The inferior and superior vena cava
26
What carry’s blood from the lower body
The inferior vena cava
27
What carry’s blood from the upper body
The superior vena cava
28
What is dark red in colour
Deoxygenated blood
29
What colour is oxygenated blood
Red
30
What is happening when the blood vessels narrow
Vasoconstriction
31
Which blood vessel has the thickest muscular walls and carry blood under high pressure
Arteries
32
What blood pressure reading 120 /80 be classified ?
Optimal
33
What are the 4 components in the blood vessels
Red White Platelets Plasma
34
What does red blood cells do?
Carry oxygen
35
What do white blood cells do
Fight infection and destroy bacteria
36
Where do white blood cells produce
Red bone marrow
37
What cells assist in preventing blood loss | And help blood clotting
Platelets
38
What does plasma consist of
Water 91.5% | Solutes 8.5
39
What are arteries
Muscleluar thick walls | They contract and squeeze blood along the passageways away from heart
40
What is the large artery?
Aorta
41
Are there valves in the arteries
No
42
What carry’s deoxgyenated blood to the lungs
Pulmonary arteries and artiolies
43
What are extremely thin walls
Capillaries
44
What happens after the capillaries have passed the tissue ?
Form larger blood vessels called venules
45
Structure of blood vessels
Capillaries Venules Veins Vena cava
46
What is the job of veins
Carrying blood from the tissues and back towards the heart
47
What do veins carry
Deoxygenated blood
48
What is blood vessels narrow
Vasoconstriction
49
What is blood vessels widen
Vasodilation
50
Where does the heart receive oxgygenated blood from
Pulmonary vein | Ocgygen rich blood from the lungs
51
Where does the heart pump deoxygenated blood to ?
To the lungs with the pulmonary artery
52
How many chambers does the heart have
4
53
Which chambers of the heart receive blood
Atrium
54
Which chambers of the heart pump blood
Ventricles
55
Largest vein entering the heart
Vena cava
56
What is oxygenated blood
Pulmonary vein Left atrium Left ventricle Aorta
57
What is deoxygenated blood
Pulmonary artery Right ventricle Right atrium Vena cava
58
What is blood pooling
Occurs in the veins pools in the extremities | Stopping suddenly during intense exercise
59
What is venous return
Helping the return flow of blood to the heart and preventing blood pooling
60
How is blood pressure measured
Cardiac output x total pheriihal resistance
61
What is vasoconstriction
Blood vessels narrow
62
What is vasodilation
Blood vessels widen