Respiratory System at Bournemouth University | Flashcards & Summaries

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what structures allow the lungs to move as the chest wall moves?

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the thorax is a sealed compartment lined by a thin, moist membrane called the pleural membrane. visceral pleura lines the outer surface of the lungs and the parietal pleura lines the inner surface of the chest wall.

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what does the diaphragm do?

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the diaphragm is the major muscle that controls pressure in the thoracic cavity and the diaphragm is controlled by the phrenic nerve.

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what is respiratory acidosis?

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a condition where prolonged decreased alveolar ventilation  leads to CO2 accumulating in the blood making the blood more acidic.

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what is peripheral cyanosis?

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where the baby's limbs and hands turn blue due to the haemoglobin binding with oxygen and that the feet and hands are furthest away from the heart.

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what do the internal intercostals do?

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muscle fibres in the internal intercostals run downward and backward between the ribs. contraction of these muscles pull the ribs downward and inward which decreases the volume of the thoracic cavity.

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what is external respiration?

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where oxygen and carbon dioxide exchange in the lungs via the respiratory zone structure

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what does the conducting zone also contain?

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it contains ciliated epithelium and mucous secreting glands which wafts dusts away and the goblet cells produce mucus and makes it stick to stop microorganisms from sliding down

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what does the thoracic cavity consist of?

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ribs, heart and the diaphragm

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what is pulmonary ventilation?

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this is inspiration and expiration

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what is the pleural cavity and pleural fluid?

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the pleural cavity is the space between the rib and the lungs and has a slimy cavity. pleural fluid is a lubricant to allow the ribs to move up and down

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what are type I and type II alveolar cells?

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type I alveolar cells are extremely thin cells involved in gas exchange between the alveoli and blood.

type II alveolar cells are involved in the secretion of surfactant proteins

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what are the 4 stages of respiration?

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- pulmonary ventilation

- external respiration

- transport of gases

- internal respiration

the first two occur in the lungs and the last two are a cardiovascular response

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Q:

what structures allow the lungs to move as the chest wall moves?

A:

the thorax is a sealed compartment lined by a thin, moist membrane called the pleural membrane. visceral pleura lines the outer surface of the lungs and the parietal pleura lines the inner surface of the chest wall.

Q:

what does the diaphragm do?

A:

the diaphragm is the major muscle that controls pressure in the thoracic cavity and the diaphragm is controlled by the phrenic nerve.

Q:

what is respiratory acidosis?

A:

a condition where prolonged decreased alveolar ventilation  leads to CO2 accumulating in the blood making the blood more acidic.

Q:

what is peripheral cyanosis?

A:

where the baby's limbs and hands turn blue due to the haemoglobin binding with oxygen and that the feet and hands are furthest away from the heart.

Q:

what do the internal intercostals do?

A:

muscle fibres in the internal intercostals run downward and backward between the ribs. contraction of these muscles pull the ribs downward and inward which decreases the volume of the thoracic cavity.

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Q:

what is external respiration?

A:

where oxygen and carbon dioxide exchange in the lungs via the respiratory zone structure

Q:

what does the conducting zone also contain?

A:

it contains ciliated epithelium and mucous secreting glands which wafts dusts away and the goblet cells produce mucus and makes it stick to stop microorganisms from sliding down

Q:

what does the thoracic cavity consist of?

A:

ribs, heart and the diaphragm

Q:

what is pulmonary ventilation?

A:

this is inspiration and expiration

Q:

what is the pleural cavity and pleural fluid?

A:

the pleural cavity is the space between the rib and the lungs and has a slimy cavity. pleural fluid is a lubricant to allow the ribs to move up and down

Q:

what are type I and type II alveolar cells?

A:

type I alveolar cells are extremely thin cells involved in gas exchange between the alveoli and blood.

type II alveolar cells are involved in the secretion of surfactant proteins

Q:

what are the 4 stages of respiration?

A:

- pulmonary ventilation

- external respiration

- transport of gases

- internal respiration

the first two occur in the lungs and the last two are a cardiovascular response

Respiratory System

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