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Biology > Organisation > Flashcards

Organisation Flashcards

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1
Q

Where does gas exchange happen?

A

Alveoli-lungs

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2
Q

What happens in the alveoli?
(Process)

A

Oxygen enters
Moves through the one cell think alveolus by diffusion
Enters the capillary and goes to the lungs
Carbon dioxide goes from the heart and by diffusion enters the alveoli from the capillaries
Co2 leaves the alveoli

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3
Q

What are the 4 components of blood?

A

Plasma
White blood cells
Platelets
Red blood cells

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4
Q

What is plasma

A

The liquid part of blood
Dilute of salts,glucose, amino acids, vitamins, urea, proteins and fats

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5
Q

What are white blood cells involved in

A

The immune system (fights off pathogens)

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6
Q

What are platelets involved in

A

Making blood clots/ scabs

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7
Q

What are red blood cells involved in

A

Carrying oxygen

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8
Q

What is the function of veins?

A

Take blood towards the blood

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9
Q

What is the function of capillaries

A

Gas exchange

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10
Q

What is the function of the arteries

A

To take blood away from the heart.

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11
Q

What has thin walls

A

Veins

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12
Q

What has thick walls

A

Arteries

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13
Q

What has one cell thick walls

A

Capillaries

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14
Q

What size lumen does a vein have

A

Large

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15
Q

What size lumen does a capillary have

A

Small

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16
Q

What size lumen does a arteries have

A

Narrow

17
Q

What is the process of blood flow in the heart?

A

Superior/ inferior vena cava
Right atrium
Tricuspid valve
Right ventricle
Pulmonary valve
Pulmonary artery
Lungs
Pulmonary vein
Left atrium
Mitral valve
Left ventricle
Aortic valve
Aorta
Body
Superior/inferior vena cava

18
Q

Which side of the heart has thicker muscles and where?

A

The left side has thicker muscles that surround the left ventricle

19
Q

What is the equation for cardiac output?

A

Stroke volume (ml) x heart rate (bpm) =cardiac output (Litres/min)

Biology (4 decks)

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