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What is the function of the respiratory system?
allows oxygen from air to enter blood and carbon dioxide from blood to enter air.
4 ways the respiratory system works with the cardiovascular system.
- 1)breathing-entrance and exit
- 2)Exterior respiration-exchange of gasses: blood and air
- 3)internal respiratation-exchange of gasses: tissue fluid and blood
- 4) transport of gasses.
7 parts of the respiratory system
- 1) nasal cavity-fliter/moisten air(hollow spaces in nose)
- 2)pharynx-between nasal cavity and larynx(connects)
- 3)glottis-opening into larynx(air passage)
- 4)larynx-cartilaginous tube(vocal chords)
- 5)trachea-flexible tube(connects larynx and bronchi)
- 6)bronchi-paired tubes(connects bronchi to alveoli
- 7)lungs-gas exchange
amount of moving in and out with each breath when relaxed. 500ml
maximum volume of air in and out during a single breath
Inspiratory reserve volume
forced inspiratation can increase tital volume
expiratory reserve volume
forced contraction of abdom and intercostal muscles can expel
diaphram lowers, intercostal muscles contract, rib cage moves upward and outward, lungs expand
diaphram returns to dome shape, intercostal muscles relax, rib cage moves down and in.
how is ventilation regulated?
controlled by the respiratory center in medulla oblogata. when nerve impulses stop diaphram and muscles relax.
what affects the rate and depth of breathing
Co2 and pH levels
what monitors the oxygen concentration in blood
Process responsible for carbon dioxide/oxygen exchange?
oxygen transport compound?
carbon dioxide carried to the lungs?
in blood plasma as a bicarbonate ion
pH levels are regulated?
Co2 levels- when biocarbonate ions diffuse an H+ ion is given off which lowers pH. when Co2 moves out of blood into lungs pH increases.
bacterial infection of middle ear.
bacterial infection causes lungs to form turbecles that encapsulates bacteria restricting lungs.
3 chronic obstructive pulmonary disorders
- 1) chronic bronchitis- airways inflamed and filled with mucus.
- 2)emphysema- air traped in lungs-lack of O2 to brain and heart
- 3)asthma-exposed to irratant smooth muscle tissue of the bronchioles spasm.
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