The Human Body- Staying Alive (OCR)

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state the function of respiratory system?

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1

state the function of respiratory system?

Supplies oxygen to the blood and removes carbon dioxide.

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2

what is a pharynx?

A Passageway for air and food.

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3

what is a larynx (voice box)?

Directs air to the trachea; houses vocal cords

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4

what is trachea?

Airway to lungs, reinforced with cartilage rings

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5

describe inhalation?

Diaphragm and intercostal muscles expand the thoracic cavity

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6

what is alveoli?

Site of gas exchange with capillaries

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7

describe exhalation?

Diaphragm relaxes, expelling air from lungs

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8

what is asthama?

Inflammation/narrowing of airways.

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9

what is Pneumonia?

Infection causing inflamed air sacs.

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10

what is the function of circulatory system?

Transports oxygen, nutrients, hormones, and wastes.

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11

describe the structure of heart?

Four chambers (atria, ventricles) pump blood; valves ensure one-way flow.

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12

what are arteries?

Blood vessels that carry oxygenated blood away from the heart

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13

what are veins?

Return deoxygenated blood to the heart.

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14

what are capillaries?

Sites of exchange between blood and tissues

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15

what is the function of RBCs

Transport oxygen.

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16

what is the function of WBCs?

Fight infections

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17

state the function of small intestine?

Major digestion/absorption; aided by bile and pancreatic enzymes.

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18

what do platelets do?

Aid in clotting.

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19

what is the function of plasma?

Carries cells, nutrients, and waste

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20

what happens in coronary heart disease?

Blocked coronary arteries

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21

what is meant by heart failure?

Heart’s inability to pump efficiently.

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22

describe the function of digestive system?

Breaks down food into absorbable nutrients.

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23

what is esophagus?

Food passage to stomach.

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24

what happens in gallstones?

Bile imbalances leading to stones.

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