Human respiratory & circulatory system Flashcards

1
Q

What 5 things make up the circulatory system?

A

Lungs, Heart, Veins, Arteries and Capillaries

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2
Q

How many chambers does the heart have?

A

4

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3
Q

What is the largest artery in the heart?

A

Aorta

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4
Q

What is the correct name for the chest?

A

Thorax

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5
Q

What do veins carry to the heart?

A

CO2

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6
Q

What to arteries carry to the heart/body?

A

Oxygen rich blood

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7
Q

What do PULMONARY Arteries carry?

A

Deoxygenated Blood

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8
Q

What do PULMONARY Veins carry?

A

Oxygenated blood

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9
Q

Which side of the heart is oxygen rich?

A

Left

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10
Q

Which side of the heart is not oxygen rich?

A

Right

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11
Q

Why is the left lung smaller than the right lung?

A

To allow room for the heart

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12
Q

What is the first part of the respiratory system?

A

Nose & Mouth
(Entrance for oxygen, exit for CO2)

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13
Q

How does the Trachea protect us from pathogens?

A

Mucus lining catches pathogens before they reach the lungs

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14
Q

What does air pass through to reach the lungs?

A

Bronchus

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15
Q
  • Turn for direction of Oxygen travel to lungs -
A

Oxygen -> Trachea -> pass mucus lining -> pass Bronchus -> through Bronchiole -> pass Ducts -> Alveoli Ducts -> enter Individual Alveoli -> gas changes -> back up Trachea, Exhale

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16
Q

What stops food going into the Trachea?

A

Flap in the Epiglottis

17
Q

How thick (in cells) are Alveoli?

A

1 cell thick

18
Q

What connects the heart and lungs?

A

Pulmonary arteries and Pulmonary veins

19
Q

How might an Arterial cut look?

A

Bright red, may squirt out of wound

20
Q

How may a Veinus bleed look?

A

Dark red, ooze from wound

21
Q

How many litres of blood does the body have?

A

5 Litres

22
Q

What is a normal blood pressure?

A

(Systolic number) –> 120/80 <– (Dystolic number)

23
Q

What does a Systolic number represent?

A

Blood LEAVING the heart

24
Q

What does a Dystolic number represent?

A

Blood ENTERING the heart

25
Q

What artery supplied blood to the head and neck?

A

Carotid Artery

26
Q

Which vein takes blood from the head and neck, back to the heart?

A

Jugular vein

27
Q

What is the scientific name for Red blood cells?

A

Erythrocytes

28
Q

Which “Cytes” help with blood clotting?

A

Thrombocytes