the respiratory system Flashcards
(30 cards)
what is pulmonary ventilation
movement of air into and out of the lungs
what is external respiration
oxygen and carbon dioxide exchange between the lungs and the blood
what is internal respiration
oxygen and carbon dioxide exchanged between systemic blood vessels and tissues
what is transport
oxygen and carbon dioxide in the blood
what is the respiratory system divided into
the upper(above the larynx) and the lower(from the larynx down) systems
what are the accessory functions of the respiratory system
- protects respiratory surfaces from outside environment
- produces sounds
- participates in olfactory sense
name examples of external respiration
pulmonary ventilation
gas diffusion -across membrane and capillaries
transport of oxygen and carbon dioxide - between alveolar capillaries and between capillary beds in other tissues
what is internal respiration also known as
cellular respiration
role of the nasal passages
warms- blood capillaries moistens-mucus filter- hairs smell-receptors resonating chambers for voice passageway for respiration
role of the mouth
takes in air which passes to pharynx
role of the pharynx
mixes inhaled air the pathways of inhaled and food cross in pharynx
role of the larynx
voice expanded structure of cartilage and muscle at the top of the traches
role of the eppiglottise
seals over the trachea when your swallowing food
function of the paranasal sinus in the nasal cavity
clean and moisten nasal cavity
where is the olfactory region of the nose
superior portion
what systems share pharynx
digestion and respiratory system
what are the three sections of the pharynx
1nasopharynx contains pharyngeal tonsils
2oropharynx communicates with oral cavity
3laryngopharynx extends from hyoid bone to entrance to larynx and oesophagus
what are the three unpaired cartilage that from the larynx
1thyroid cartilage hyaline anterior and lateral walls of larynx
2cricoid cartilage
hyaline posterior of larynx
3 epiglottis elastic cartilage ligaments attach to hyoid bone
functions of the larynx
1 prevent entry of food and liquid into respiratory tract larynx is elevated
thyroid and cricoid cartilage support and protect
voice production
where is the trachea
anterior to the oesophagus
where does it start from and where does it end
cricoid cartilage into mediastinum
what are the ends of the tracheal cartilage made of
elastic ligaments and trachealis muscle
what separated the left and right primary bronchi
carina
how does the right primary bronchus differ from the left primary bronchus
the right is larger in diameter than the left
the right descends at a steeper angle
