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Respiratory system

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lilypoh's version from 2016-04-16 13:18

Respiratory system

external respiration, is the inhalation and exhalation of air and the gases it contains.

Respiratory system

Question Answer
Sinusesthe hollow spaces inside the bones of hte skull surrounding the nose, it also lined iwth mucous membrane
function of noseorgan of smell; moisten and warm the air entering the nostrils; filter dust,bacteria, and other foreign matter from the air
function of mucous membrane and hairto filter dust,bacteria, and other foreign matter from the air
Pharynxa tube which leads from the back of the nose and mouth and divides into the oesophagus (posteriorly) and larynx (anteriorly)
structure of pharynxis about 12.5cm long and made of muscular and fibrous tissue.
Pharyngeal tonsilsfilter bacteria
Function of pharynxit acts as an air passage and also warms and moistens the air, also helps to move food into the stomach
Larynxfrom the pharynx, air travels down to larynx (also known as the voice box).
Larynx also known asvoice box
trachea also known aswindpipe
Function of larynxis a passageway for air between pharynx and trachea. It filters bacteria, helps in voice production and warms and moistens the air.
Tracheafrom the larynx, air travels to the trachea
function of the tracheais a passageway for air between the larynx and brochi.
Globlet secretory cellsis in the lining secrete mucus which collects any foregin matter or bacteria and the cilia then push this up to the larynx
Bronchiare the branches of the respiratory tube which transport air in and out of each lung
Structure of bronchibronchi (singular: bronchus) connect the trachea to the lungs. There are two of them, one left and one right which enter the lungs at the hilum.
function of bronchito pass air from the trachea into the bronchioles and thus to the lungs.
Bronchiolesthe final and finest tubes in the passage of air from the nose to the lungs.
Structure of bronchiolesthey are made of muscular, fibrous and elastic tissue.
the microscopic tubes of the bronchiolesare called terminal bronchioles
function of bronchiolesthey are take air to the alveoli of the lungs
Lungs is made ofbronchioles, alveoli, blood vessels, nerves, connective tissue and elastic tissue.
Pleurais a sprous membrane that surrounds each lungs.
How many layers does the lungs hastwo layers
the inner layer of the lungsit is visceral layer which stick to the lung tissue and covers the surface
the outer layer of the lungsit is parietal layer which sticks to the chest wall and the top of the diaphragm.
Pleural cavityis the space which the two layers are separated and filled with serous fluid
function of pleural cavityis to prevents friction between the two layers during respiration
Alveolithe exchange of gases in the lungs which takes place in tiny sacs at the end of the terminal bronchioles
What is alveoli made ofis made of a think layer of squamous eqpithelial cells and are surrounded by a capillary network.
Gaseous exchangethe entrance and exit of oxygen and carbon dioxide in and out of cells.
function of lungsallow the exchange of gases into and out of the blood
function of alveolito exchange gases between the circulary and respiratory systems.
What is external respiration?is the breathing in and out of air and the diffusion of oxygen from the alveoli into the blood and carbon dioxide from the blood to the alveoli
What is internal respiration?is the diffusion of oxygen from the blood to the body cells, and of carbon dioxide from the body cells to the blood.
What is diaphragm?it is a large muscle. it is positioned between the chest and abdomen and separate them from each other
What forms the adam's apple?the thyroid cartilage surrounding the larynx
What are the intercostal muscles?they are between the ribs. these muscles aid the diaphragm in respiration.
How does the body know when to breathe? Nerve cells call chemoreceptors, found in the aorta and carotid arteries send impulses to the respiratory centre in the medulla oblongata of the brain with messages about the low levels of oxygen and high levels of carbon dioxide.
The brain's role in breathingtwo centres of the brain are involved - one is respiratory centre in the medulla oblongata and another one is the pons varolii.
The lungs surrounded bya membrane called the pleura
Structure of the diaphragma large dome shaped muscle with a sheet of tendon with muscle fibres
the position of the pharyngeal tonsilsis back of the nose
Micturitionurine excretion
defecationfaeces expulsion
parturitiongiving birth
Respiratory centre in the medulla oblongatastimulates inspiration and controls the depth of breathing and its regularity
Pons varoliistops inspiration thus provoking expiration.
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